If you join the Landry Select club there is no need to make a reservation. Simply show your card when you arrive and they will seat you next. We went in Sept and the couple ahead of us was quoted an hour and 25 minute wait. We stepped up showed our card and was then take directly to a table.
You can also do this at the Rainforest. It is a Landry Restaurant as is Bubby Gumps at Universal.
See bullet point number 4.
http://www.landrysselect.com/SelectClubFeatures.aspx