As a mostly forever GM, on those rare occasions I do get to play, I'm very appreciative. I have run into issues as a player, but that had more to do with different group dynamics and play styles than I was used to. Most notably, I sat in on an Adventurer's League session with a group that had been playing together for a while. There was a group culture of moving through the adventure quickly and getting the XP and loot to level up within the AL system. It was a very railroady, check-box ticking way of playing and they would get annoyed if I ever suggested any course of action other than the obvious one. My group tends to play more sandboxy games and for long sessions. Trying to rush through the pre-ordained steps of an AL adventure in 3-4 hours to maximize your XP and loot in as short a time as possible was hard for me to adjust to. The way these folks played, I swear they had either played through or read the adventure before or just have played so many AL modules that they just knew what they were expected to do.