I think one of your the biggest hurdles is going to be to have the right containers / utensils available to use in the micowave - stuff you'd have to bring from home as the studios are not supplied with anything "real". Are you driving?
There are plenty of pretty decent frozen meals that can be prepared in the microwave (Bertolli, PF Changs etc) but you'd need to bring a large bowl of some sort to heat them in as they're packaged in large bags that are not microwaveable. You'll also want to be sure to have some larger thick paper plates on hand I would think...
You could get some of those pre-cooked Perdue chicken strips and warm those in the microwave - then you could use them to make a chicken caesar salad or you could get tortillas and shredded cheese and use them with the chicken strips to make quesadillas in the microwave. I personally use the toaster a lot. You could make toast and tuna salad and make "tuna melts". I have also used the pre-cooked bacon several times - you could make BLT's or Club sandwiches.
How about baked potatoes?! There are also a lot of soups now that come in microwave containers. So you could do a combo with soup and a salad or sandwich.
Nachos are another option. You could get a jar of salsa, tortilla chips & shredded cheese...I've been known to use items from a salad bar for condiments for nachos. If you're grocery shopping down there you might find a store that has a salad bar. You could pick up some chopped lettuce, pre-chopped tomatoes, olives, sour cream, jalapenos etc without having to buy individual packages of each (other than a bag of cheese)...just get what you'd need for one meal from the salad bar. Maybe somebody can tell you which grocery store has a salad bar?!
The San Giorgio brand of pasta now has "Pasta Portions" which are a quick cook pasta. They are individually sized portions of pasta (like Rotini) that comes in a boil-in-bag so you don't need a strainer.
(I picked up some of these for quick meals for my son who's a swimmer & goes thru a lot of carbs.) They take only 3 min. to boil on the stove but they also have microwave directions - I have not tried making them in the microwave but the box says to use 2 cups of water in a 1 quart bowl and microwave for 5 minutes. Then you could just heat up a jar of your fav. pasta sauce whether it's a marinara or pesto or alfredo. OH, here's a thought...you could use those Perdue chicken strips I mentioned before & make pasta with Alfredo sauce and chicken.
For studio breakfasts I have also made poached eggs and the pre-cooked bacon in the microwave and then toasted English Muffins (+ added a slice of cheese) to make breakfast sandwiches.
Good luck - I'm sure others will chime in with other ideas.
Personally, I think your biggest challenge about planning any of this is the lack of counter space in many of the studios. There is not always very much room to work with. Some are bigger than others. The kitchenettes at Kidani Village are a joke while the ones at HHI are HUGE and the ones at say Boardwalk Villas or Wildnerness Lodge are sized somewhere in-between.
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