I am glad you did well at your first show. In my opinion, 250.00 is way too expensive this day and age for a two-show in my opinion and almost impossible to make any money at those types of shows. Back 10 yrs ago when the economy was good and craft shows were extremely popular you could do well but now with the competition, it is very hard. The problem with festivalnet and others like it the promoters are expensive promoters which I learned my first year not to use. But to be fair it is hard when your first start. The best is to talk to vendors at the craft fairs about where they do shows, make friends with them even sharing your product with them. In my last few years of doing shows I would never do any over $60 per day and that was a 3 day Holiday show that I knew I could make at least 2k. I even gave that one up this year, since they cannot have their cookies that brought in the crowds and had to limit vendors. This is a twice a year Craft Fair to raise money selling Ginger Cookies. In So Cal many weekly farmer markets, most are shut down now to crafters are $60-$75 per day and not even close to being worth the money, it is a losing proposition. Plus I would never consider working with the promotion company that has eaten up many of the small promoters So the CA area. I will finish my rant, I only recommend, especially to anyone in So Cal to stay away from the expensive venues it has really slowed down here, do not think because it is an expensive show it will be good. My best weekly market which I lost due to covid cost me 10% of sales. To go to this much work and walk away glad you made booth space is just not worth it, that means you lost money.
As for booth setup, I will mention you can set up 4 tables with a 2' walk space in the front of your 10' tent, or 8 tables with a walk-in. A little side note, when selling in a high Asian populated area they do not normally come inside a booth, even with the proper invitation signage up inviting them in we found they would not come inside the booth. Just many things to consider, when learned that tidbit when attending a very expensive Cherry Festival, and it was not the promotion company that had the courtesy to inform us of such.
Sorry, for the long post but you learn a lot when selling in these venues for 10 + yrs. Others here also will have a wealth of info because they have been selling just as long or longer.