One thing I learned from going to see a lot of shows is that the house manger and usher are there to please their audience. If you are uncomfortable in your seat or someone tall is sitting in front of you, tell someone or ask an usher if there is a way to change your seat. There is no reason why you shouldn’t be able to see and enjoy the show.
If for some reason your seats are not next to your friends’ seats, ask for assistance. If there is a way to seat next to your friends it doesn’t hurt to ask. Worst comes to worst, you will be told “no.” In my experience, they’re employed to go the extra mile to please audience members, so don’t be afraid to speak up.
Go see a show and have a great time!