We have never been to HDDMR, but plan on going this Sept. to celebrate my 40th around the same time Disney celebrates its 40th. I found my way here because someone asked the same question that I have had. I have seen conflicting reports... some websites say it is nightly, while others say it only done on Thur and Sat nights. Right now is too early to book for it, but trying to decide on the night of the week to go!