Good dream, but I'm not sure this is the right place to ask. The reality check is that most pro disciplinarians and other spanking specialists tend to keep to them selves, and if they attend spanking parties at all, they'll be small ones, among friends. What you're asking for could be considered a two or three hour outcall session, and that's a lot to pay for a spanking.

The Strictly Spanking folks have pretty large parties, mostly attended by couples. Not that you'd be out of place with your own (secret) play partner, but that group, and, honestly, most open spanking parties, leans more to the men-spanking-women crowd. You'll get the spanking you paid for but you might not get much else out of the party. Or you could get lucky. It's your chance, and your nickel (or $400).

Good luck, and check your private messages, because if I can, I'm going to leave one for you.