The best words of advice I got at the onset of caring for my mother after she was in assisted living was: "Don't go visit at regular times". It seems minor but it is really important for your freedom and stress level. Keep your visits on your timing, as much as possible so they won't expect it. Remember you are paying big money for professionals to be there so you don't have to be.
The way I look at it, it's like sending a kid away to college... you hope they like the dorm.... make new friends.... like the food... and get to classes [activities] on time. You can't help but worry.
I know I need to start backing off, as there is no need for me to go every day. Dad still has his Caregivers from back when he lived at home, but they are now just mornings instead of full-time... so he has the whole afternoon and evening to do what he wants. I think I would feel better if he would make some friends, but I guess it is not easy to do at 94 years old. He's only been there 3 weeks. He does have dinner in the main dinning room with the same couple, who's wife is from the same part of Iowa that my Dad is from :)