Yes, they can visit you and you can eat at the restaurant together. They are not supposed to use the pool, but other than that they are free to stroll the grounds, eat, visit you etc. they will just need to tell the guard the purpose of their visit and he will let them in
I'm sorry I can't remember how much the mug was, but I think it was $11, someone is sure to be along and correct me if I am wrong though