There's a provider I've been wanting to see who visits a city near me every four to six weeks. Each time she's in that city, I learn about it too late. I don't think she runs her ads far enough in advance, as I log in on TER once a day but don't see her ads until it's too late.

Anyway, I filled out the reservation form on her site, and for date and time I put "noon, any day that you're in Metropolis". I gave references, name, cell #, email, etc.

I've booked with touring providers before, but never tried to book before a date was advertised.

Is there a better way to do this?

 I'm assuming you've already contacted her via e-mail about your interest in seeing her (aside from the reservation form on her website).  It sounds like she already has a stable of clients in your home town, so she doesn't need to run her ads that far in advance (saving her $$).  The next time you contact her, offer to book for two hours or pay for her room if she's doing incall.  You need to outbid one of her regulars.  Good luck.  --z

No harm in contacting her ahead of time and asking for an appt when she is going to be in town again.

Some don't need to advertise as much. I barely advertise unless going to another city. She comes into town often so she may very well have plenty of regulars.  

She responded to the reservation form and will contact me when she's in the city close to me.

I often don't know if something is acceptable or not.

Come here and ask, you'll usually get some good advice.