Hi Emily, here's my 2 c, this is just what I do, so don't take it as gospel, just might give you some ideas of things to think about doing,
For hotel outcalls, ask for name the room is booked under, then call hotel and ask to be put through to them. No exceptions for this and I've so far been ok.
For homes, I get a landline and check its for the address Im visiting (and call them on it). Ive also accepted a pic of two letters together, with same name and address, with todays paper. Or a letter with the door number in photo. Some girls disagree that this is thorough enough. I'd advice only doing outcalls to places that don't take (or cost) too long to get to, just until you feel more confident at spotting TWs. Guys don't seem to like the extra security checks, and sometimes not want to comply, but I wouldnt risk it, theres a lot of arseholes who get their kicks in messing escorts about.
I see guys without AW profiles, but its a good way to vet people, but remember it can be faked. Check out who has left the feedback and that they look like a real escort! Most importantly is the phone call, always trust your gut. If someone doesn't come across well on the phone they won't do in person. Maybe they are shy and awkward, but you don't want these guys when your new, just too much awkwardness all round! I ask age, ethnicity, are they looking for anything in particular, mostly just to get them talking and I can make a judgement on how they sound.
As for clothes, you don't want to attract attention going to the hotel, so like you've just come from the office. Shift dress, pencil skirt and shirt. I wear flats and then quickly slip on heels when I get of the lift. If I guy wants something specific I tell him that I bring it and change on arrival. I've actually gone to outcalls dressed in jeans and tshirt as I forgot to bring outcall gear, and they've stopped me changing into my "sexy" stuff, I think some like the girl next door fantasy.
Lastly, make sure you have a security phone buddy!! You can find one on here (I can help if you need) DO NOT go to ANY bookings without telling someone where you are going and what time you will be finished, and then let them know when you are finished, on your way home and safe.
Good luck x