You've already decided, but just want to contribute my resounding praise for HDDR -- we did this for the first time last September and LOVED it! The food was really good, the entertainment was charming and funny...everybody loved it -- my parents, DH, and our two DDs (5yo and 16mo at the time) didn't really get the jokes but laughed and clapped and sang right along.
Love it! We are stingy with our TS credits and this was well worth 2!
Enjoy!