There are providers I am aware of whose stated policy is that the donation you give on your first visit will always be the same for future visits. Just wondering if this is the exception or the rule?

most girls will keep you at first rate.

I've had some that have reduced their rate for repeating and a few that have raised their rates too.

I believe there are many factors.
But if you are a good client, I am sure that they would keep the rate the same.

most will keep the same rate that u started with.

Many of my customer are seeing me for June special.  Have you first time visit with a girl for a special?  What happened after the special was over?

Since you're advertising it as a "special" for the month of June, I'm pretty sure no one would expect to pay the same "special" price on future visits after June.