First of all staying on grounds we feel is the only way to go especially with the superb WDW transportation system. We are DVC members and our home base is the Beach Club. You must consider your time, personally I like going through Epcot to the monorail to the Magic Kingdom,feeling you never know what you may see on the way.Stopping to the new Starbucks in Epcot is also GREAT for that AM cup of coffee on your way. It's also something about traveling on the monorail. Having said that though, the buses usually are somewhat faster if time is of the essence. As for you dining reservations once again it's based on your time and at what park you are attending and the distance to get back to your room if changing is necessary and then back to make your reservation time. As for the Studio's we like the boat ride to and then a walk back.