If you’ve got the right DM for it, they lean into it, because everyone’s having fun.
But say by adventure 10, they’re still trying to beat the system. It feels exhausting trying to create a story like “A vampire council, but they have anti-magic doors so you can’t disguise yourself. And also no rats. And you can’t teleport in there. And summoning a devil or warping the castle is forbidden. And…”
In a world where magic exists and anti-magic countermeasures are a thing do you think any reasonably powerful person wouldn’t have them in place? It seems like you’re trying to come across as ridiculous but all of those sounds like pretty reasonable precautions in a magical world.
Just don’t do that lol, let them do wacky hijinks, or play a system without the wacky hijinks
Maybe you could try letting the heroes use their cool abilities designed specifically for these situations
