Casual ish wedding, outdoor mainly, food trucks, live music, we have a marquee that can seat 50, we over invited (it crept up on us..) and have 68 coming. I thought more people would say no as it's last minute 
Anyway ceremony we've arranged 50 chairs, not a huge issue as we have rustic benches in the marquee and we could put some of them at the back.
There's no sit down meal, as it's food trucks and hopefully we will have good weather so people will be scattered around the marquee and on the hay bails around the fire pits. But dad and best man want to make speeches does everyone need a proper seat for this? Will it be ok to have benches in the marquee for 50, and if everyone does pile in there at once at some point does it matter if some are standing? Or could bring chairs from ceremony in? I'm stressing!