Fast pass arrival question

I’d like to get a FPP for Beauty & the Beast Live because I don’t think we’ll be able to show up 30 minutes early according to my TP. The TP has us getting to the show at 11:35 for the 11:45 show. My question is if I get the FPP can I arrive at 11:35? It looks like the FPP are for 30 minutes before the show? Will they honor them 10 minutes before as long as the FPP is for that particular showtime?