The park is closed this week?!?!?!?

I am ........ Decided to do a road trip for my birthday. This Tuesday. Checked all the local parks. Double checked dates open as I knew MM isn't open 365. Decided I really wanted to return to MM and spend the day on coasters. Booked a hotel. Bought passes so we could spend two or three days there. Sitting in the hotel and decided to double check hours, and they are CLOSED? That was a waste of a drive and a great way to ruin the birthday.