As an outcall only provider I prefer outcalls works the best for me and grabbing a drink or a bite to eat at the hotel is always a plus.
There are so many hotels out here there is no shortage of rooms.In other cities where the hotel selection is quite smaller than Vegas maybe Incall would be better in those situations.
I did offer Incall for the first time this year I had no problems but I found more requests for outcalls vs incall in my experience.
Do what feels and makes you comfortable