We were able to get a table at Margaritaville in Dec. by showing our HRH key- got a seat in about 20 min, vs. 1 1/2 hour wait. We actually didn't know about this perk, but when we were told it was 1 1/2 hour wait, my husband jokingly asked if staying at HRH could get us in earlier- and to our surprise the answer was yes!
The food was excellent, reasonably priced and atmosphere great for a casual meal.