Friends and family?? Piece of cake! They already know and love you. Just enjoy yourself!
Absolutely ask the other vendors if they want to participate! Maybe have a couple of extra baskets available for them to use to pick their things in. All they can do is say, "No". If you don't ask, they may feel left out!
eta:
Our 4 yo Berkshire brood sow went to freezer camp this week. She was almost 600 lb hanging weight! A lot of fat on her, but that's okay by me! I'm rendering up organic lard today. Already have two 5 gallon buckets and should easily fill another and probably half of the fourth bucket.