I was making my way up I-17 yesterday and saw on Pappadeaux's marquee that they have all you can eat lobster today (Tuesday) for $42.95 beginning at 4pm. I'm not sure if the promo is just this week or if it will be occurring on future Tuesdays as well. I remember going there about 8-9 years ago for AYCE lobsters and it was quite good - the manager at the time told me that they went through over 2500 lbs of live main lobsters each week when they were running the promotion. Best to get there early as the wait for a table happens extremely quickly and they used to run out of lobster at about 7-8pm sometimes.
Pappadeaux Seafood Kitchen
11501 N Black Canyon Hwy, Phoenix, AZ 85029