Being early is more rude than being late, I think. It's ok if they wait until the time they booked but expecting you to see them early and calling while you are with someone is plain rude. Late is not great either though. I like to take short notice bookings in hotels and do often find that a guy who says he is 10 - 15 mins away is always more like 20 - 25.

Just say that pal or check your satnav, it will tell you the exact time you'll be parking up!
Talking of chewing on things, I had a guy recently want me to bite his cock. And I mean bite it. Hard. He was awesome actually, a fab booking but I just remembered this! Odd feeling, deliberately biting into his dick...

He loved it!
What else do they do to annoy? Send copy & paste texts, when it's only a few words. Unless someone gets blocked I don't delete their text trail. So if each time I do incalls I get the EXACT same message... I kind of get the feeling he is scouting around a few ladies...