That's bannable. There is something EASY called just building a few trading rooms. It doesn't even have to be complex. You can get killed easily. If you're someone without armour or Kit Fight
I'm neutral on this. When i need EXP I put the bottles in my enderchest, Find a safe place far from spawn, Than /echest . Exp rooms shouldn't be that hard to make though. Just a simple 3x3 room with pressure plates activating a few pistons closing the room.
That's weird, I always here people complaining about pet hiders. Its so easy to report them, I don't know why people don't