We're an EP-spoiled family, we've always either bought them or stayed at one of the hotels that has them (but we've always gone in early June or mid October, times that were listed with high crowds)
So I should probably stick with my RP rez? I noticed undercover has 7/10, 4/10, 3/10. I never trust any of those crowd calendars. I will say I have had no issue booking last minute rooms with APH.