Showtime fatigue

For the past two nights I have been involved in a review, Cabaret style show with an amateur theatre group at home, and I am T-I-R-E-D. I can only surmise that I am not as young and fit as I used to be, because I used to be able to do a week of these things and not be too fussed.
It's been weird this time, I've not been part of one of these shows in quite a while, but this time, my heart just hasn't been in it. I was having so much fun until a couple of weeks ago, when certain people involved just sucked all the fun out of it. I'm kind of glad that it's all over tonight and I can just forget about the whole ordeal. To let you understand, I am usually the shutterbug of the group, I take loads of pictures so that every little detail is captured, and I can't even bring myself to do that tonight, I don't want to remember it.