How do you all feel about this? Personally I have some mixed opinions about it. We have a show coming up this weekend that a buddy of mine hooked us up with and another one of my friends is going to open up for us with an acoustic set, which is totally fine by me. He's been wanting me to sit in with them on bass for the last two songs, which I really don't want to do but really don't know how to tell him. His set is like 45 min. long where ours is nearly 3 hours, I'm trying to save my energy for our show. We'll then the other day he mentions something to me about trying to sit in with us during our slot, which I have some very mixed opinions about. 1st- the guy has never actually played with a full band, drummer, etc....so I'm not sure if he could keep up timing wise and could possibly wreck the whole song. 2nd- he's never came down to one of our band practices and actually played while we were practicing, which I think would really show that you are serious about wanting to learn the way we play a certain cover song. I know it's all in good intentions, but I really don't like people sitting in on our gigs. As a band, we put a lot of hard work, practice, time and $$ into this and I really don't want to take the risk of f'ing up in front of a crowd and ruin our chances. I feel like I"m being selfish, but I really feel like this is our gig and we were hired to play it......end of story. YOu all have any opinions or past experiences with people or friends sitting in with your band?