While you offer a lot of practical physical booth advice....
As an ex-Fair vendor, I'd offer a bigger, more foundational thought....
"Which would you rather be:  Walmart or Disneyland?"
Are the visitors to your booth going to compare the products you sell and the experience in your booth to conventional retail.....or an entertainment venue?
In Walmart, its all about efficiency and low price....and you are competing with the cheapest products out there and miniscule profit margins, because customers are bargain shopping.
At Disney, you are paying for the experience.....and rarely does the visitor pinch pennies, they are out for fun, and willing to spend a little more to get it.
Their employees are not in t-shirt "uniforms," they wear carefully chosen costumes, that support the theme of the environment.  And they are not "sales associates" but cast members, and expected to support the entertainment experience.  In a renaissance show, that means looking more like the performers than a hippy-dippy swap meet vendor.  Yeah, it costs a pretty penny to look like a part of the show.....but if you are selling high-quality goods, do you want to look like a vagrant....or an artist and voice of authority?  
Can you support the show through your speech and behavior?  It doesn't cost you or your employees anything to address your customers as "my lord," "good knight," "fair lady," or "young princess."  But it transports your customer into some special place of imagination and play....where they are much more likely to induce themselves to spend.....and benefit your bottom line.  Give your customer a bow or curtsy.  Learn to sing a period song during downtimes....or hawk your goods with clever phrases and rhymes.  The more you inject showmanship in the way your booth works, the more you make this Disney (where everyone spends too much), rather than Walmart.

After witnessing a disaster, make sure you know emergency procedures and safety locations along with how to secure your booth/tent. You really don't want to be stuck figuring out how to lock down your stuff and run for cover if there's the disaster weather such as hail or tornadoes (or whatever else you might have as a potential mess locally for you). And also pay attention and ask questions to others who have handled them before there to help deal with messes for wind or similar because that can wreck your day pretty badly.

I just got accepted as a vendor (dream come true) and your videos have already been so helpful, thank you!!

As a vendor I really appreciate you producing this video it's extremely helpful I'm looking to start doing Renaissance festival soon so thank you very much for putting this information out there it was extremely helpful please do more of these type of videos they are extremely helpful to those of us that are just starting also watching your cat's was a lot of fun LOL 😆 😁😉👏🏻👍🏻

At the renn faire we used to work at. we were told the venders were as much as part of the show as the performers. This includes what you wear.  I even saw a vender kicked out of the show for wearing tennis shoes.  hint bring water  hint I used redwood  mulch on the ground as a floor.  This smelled good and also soaked up moisture if it rains and prevents muddy floors.

Thank you for this! I live near Sherwood Forest Faire and have attended multiple times. I’m a wire wrap artist and over the dozens and dozens of shows (unrelated to ren Faires) I’ve been told to try to sell at one. Starting my preliminary research and this was my first stop 😊

Love your cats

This was SO helpful. I can’t find any other videos about vending at ren faires and I really want to apply

Just building off another video where I am telling vendors and workers at Renaissance Festivals what it is like to work/vend at them. Just commenting on the little things that make the process easier. Hope this helps with some of your questions. Enjoy!

Great advice!

Thanks!

Could you do a video on examples of bad vendor ideas?

Great call on the 10 gage cord, didn't think of that. Our first ren fair is in about 6 weeks. We make all products and we're concerned about having enough stuff to sell. How much do people window shop and how much do people actually purchase?  I'm cheap so I don't really purchase stuff unless I really want it. But that's just me.

The only problem I saw with LarpTents is that they use white powercoated poles... If they'd used brown or some other color, it would have been much easier to blend in with the environment.

This is great vendor info all around with a few items I hadn’t taken into consideration. I am a well seasoned vendor for standard craft shows would you produce a video perchance for experts of others types of shows and what makes renaissance shows different?

Do you travel with the festival??
*Or you join when it's in your location?  
*Do they change vendors every year?
*when to apply
* what is acceptable rate
Thank you 😊

If I get a larp tent can I still use at other events or would that be a problem??? Anyone??

I want to look at becoming a vendor at festivals, and I was wondering if you have any dos and don'ts to sell as someone who dosnt know what would be looked down on such as buy and resell items there is always the fear of "what if" and is becoming a vender something you would recommend to do

Good day to you! Do you have advice regarding what size to make a vendor booth? I am thinking of selling my sculptures at fairs and craft fairs. I have a background in props and stage production, and am thinking of a really cool booth that is easy to break down and set up  but looks permanent.

Thank you!
PS
Seems like a good way to tie down the booth is with 5 gallon paint buckets filled with water at each corner. Fill up on arrival, dump on breakdown.
PPS
Thanks for the very helpful information in your videos!

When you say booth number, are you talking about your tax ID number?