The most convenient and ones I love to do are:
-Monorail tour: Gflo, Poly & Contemp. Bonus points if you boat over to Wilderness Lodge, we usually do this as a monorail pub crawl and then end the night with Hoop Dee Doo over at Fort Wildnerness. If not, it's worthwhile to get apps & a drink at the California Grill lounge (or do a full meal). Ohana has DELICIOUS food(breakfast and dinner), the GFlo Cafe is super cute, good food & service for a good price. 1900 PF is one of my favorite character dinners. It's super easy to tour all the resorts before or after an ADR, we like to plan it on a "rest" day or on arrival day.
-Boardwalk area tour: this one I'll usually only do if we have a meal over there, ex: Yachtsman, Mom & I left Epcot and wandered through the resorts before our ADR to check things out, but I usually don't spend too much time over there unless we have a reason to go over.
-AKL: AMAZING, heck, I'll take the time to go over there to just eat at the QS Mara. However, Boma & Sanaa are both incredible restaurants too!