Are foam mats allowed at BFD? I didn't see anything that said I couldn't but I wanna make sure.

NO far as I know. They also allow sling chairs and they have chairs at Starplex that you can rent for the day onsight.

Yes

Great question! IDK but you can rent a short lawn chair for $7

You might need to call the venue. I don't see anything that says they shouldn't though.

Define small

If it is small.