Depending on what you mean by "facilities and support" -- and I don't mean to be Clintoneque here, pinky swear -- that's anywhere from a modest request that's likely to happen (and sounds like it didn't happen this year through a misunderstanding by/with the hotel -- I'm assuming that the originally planned venue was fine with you, although you know what they say about assumptions) to an impossibility.

I think you can get open music parties in a location that isn't metaphorically Siberia; I don't think you've got much of a chance of persuading people whose thing isn't open music parties to participate, either as audience or performers.