I find it odd for the first week and then I don't usually think about it if the break is longer than a week. I do take breaks myself, so a break does not really bother me. I don't enjoy or look forward to therapy appointments. It is like voluntarily submitting to torture and paying for it as far as I am concerned. I am not saying it is not supposed to be ultimately useful, so maybe more like a dentist without any novocaine.
Sometimes I think about how they probably react to my vacations - I don't think they care whether I am there or not. Why would it be different for me with them.
It can be nice I think, to use the therapy money for something fun as a way to handle it - like dinner or a play sort of thing.