I second the suggestion of choosing salads at restaurants. Even McD has a salad. I'd rather have a McD salad than a Subway sub. The Subway wraps are decent. Go easy on the carbs when you're traveling, avoid simple sugars (soda & junk), snack on veggies & fruit, dried fruit if necessary, and you'll be a lot more comfortable with less calories. In addition to bananas & apples I'd add oranges--they travel well but they are messy to eat.

It's funny you bring this up right now, because a few days ago in anticipation of my 2 weeks in Phoenix I googled "hotel cooking". Did you know some people consider the iron to be a cooking appliance? I'm not gonna try that one!

I read some funny stories about cooking in the coffee pot, or using the coffee maker's heater as a burner.

I have a microwave and a fridge in this hotel. There's a toaster oven in the break area of the lab I'm working in which opens up possibilities!

So far I haven't cooked anything, because I haven't had a chance to go to the grocery store. I got here Sunday night. I'm heading to the store in a few minutes on my rental bike!

A note to explain the oatmeal thing. Rolled oats are sometimes called instant oats. They come in a cardboard cylinder box. They are plain and you can add good healthy stuff to do them, anything from dried fruit & honey to peanut butter to cream cheese to salsa! They take a minute to cook, you can use any liquid, milk or water or juice.

Then there are these little packets of instant oatmeal, that have tons of sugar added. That's what you want to avoid.

Last there's oats that aren't rolled, like steel cut oats. Those take an hour or more to bake or boil or whatever. Not all grocery stores carry this.