great thread! It explains why this hobby is so addictive, its not just the end product!!
For me, if I book an independent I enjoy the back and forth via email/text. All the details being sorted out, it feels horny to be communicating with someone about how best you're going to fuck them!
Then the half hour before a punt is a sweet spot for me. I normally will stop at a pub and have a drink, calm the nerves. Then the final walk to the escort's location, buzzing her intercom, the big buzz when the door opens and then up the stairs/lift. And then the final walk down the corridor, knocking on the door and then, as others have said, that cock-hardening sound of high heels clacking down a hallway towards the door. Then the pause where you know they're looking through the spy hole at you and then the door being unlocked and opened, and that lovely thought that - barring some horrible bait and switch - a young gorgeous lady is about to suck your cock and will let you fuck her multiple time, any way you like.
Shit, I wish I had the jab now - it's a year to the day since my last punt!!