Two a week until late Sept would be fine, after that, do as many as they want. But, here's the thing. Late Aug into Sept is a fairly low season. The parks aren't crowded. So, Disney wants people in it's resorts and in the parks. So, they are starting to get earlier and earlier with the parties. I don't buy the whole 'park closing two hrs early argument. It closes when it closes...Disney's choice. And I haven't seen MK be any busier on party days...until around 4:30ish!! The cost of these party tickets is getting ridiculous. Not that many years ago, they were under $50 each, and Disney sold fewer of them. The parties were a lot more fun then. Now, they schedule twice as many parties each week, and sell at least twice as many tickets. Yes, it's a business, but it seems like a blatant money grab! But, I feel that way about many of the special ticketed events at Disney lately.