Hey - just realised a one-night session in an hotel with an overnight stay on a Saturday night in mid-January. Have you already had one this year then or are you having it late? If you are talking about next year I think you could probably command a good rate with that many people at most hotels in mid-Jan. Probably worth just going through a guide of independant hotels in the area and negotiating a good deal directly with them

Cheers

DeG