An Outcall is when YOU GO TO HIM.
You would be best to do a search for 'outcall/s' and you should be able to read everything you need.
You should never book a hotel cos the guy might end up as a no show then you are out of pocket for nothing - and when guys think of this happening is gives them a bigger buzz.
Do A LOT of research before you go any further. Escorting is something you must know about BEFORE you take any steps, although you can learn as you go along, you MUST know an awful lot before you even start even if it means putting off this booking till you know what you are doing.