If she's still there Debra at Kona is awesome! When we are there with our group of usually around 11 with a bunch of kids and special request she is always on top of everything.
Go to the Tambu Lounge and request Clinta. This guy has been there for like 30 years. Start up a convo with him, he knows a bunch of trivia and history about WDW. He even remembered how to make the seven seas lagoon cocktail which hasn't been on the ''standard bar menu'' for years.