Honey every provider is YMMV to a point. I won't lick a guy's azz who looks like a damn tree fell on it, nor will I go near balls that smell like pee pee dots lol.
You won't catch me doing FS with anyone above 6 inches and I won't do anal with anyone more than say 4.5, so there ya go. Providers have reasons for being ymmv and I doubt that's going to change any time soon.
I can promise every guy I am with gets a bbbj and cim, but that's about ALL I will guarantee. If you have had breath, I am not kissing you, and if you can't daty without biting me, forget about it!
I will be on time, treat everyone with respect, provide an upscale incall so those things are just common sense, but the rest is a crap shoot pending a guy's cleanliness and tact.