i purchased a special to try a new hot yoga studio. I HATE that they do not offer a free trial. I had to buy a package (well it was only $5 more versus a single session) and after the class I was so disappointed Its just not challenging enough for me. I talked to the owner and asked if they offer any other classes that are faster paced, more advanced. He said the one i took was the most.
can you make it more challenging? like, when they do tree, throw in a flying pigeon? or when they do side plank, lift your leg into your hand? or if they do dolphin, jump into a forearm stand? go into full vine during the warrior series? splits during pigeon? full bow instead of bridge? If you think it would be out of place, I would just go towards the back side of the room.
I think most yoga places encourage you to make adjustments to fit your level. That does suck they do not offer a free trial because yoga studios definitely can be a hit or miss. It's like dating, IMO.
I'd write a constructive review on Yelp and bail, or either try to make it more advanced or do it on a rest day for casual stretching and piece of mind.