Does it cost anything to rent the outside covered tables? Is there a way to reserve them?

I believe it's $10 plus tax to "rent" the pavilions ... first come first served ... at least, each time I've done it it's what I have had to pay to CoJ Parks & Rec

Yes, First come,first served

Hello you only have to rent the pavilion tables in the far back not the ones up front by the playground area

No cost. First come first served.