Good travel options

I am going to start traveling more for work - lots of trips back and forth to Canberra. What are so good tips for both food and exercise? I am going up on Monday so I'll still play tennis Monday night. But in general, I wont get up at 4am to workout to make my plane! Also, what are the no sugar, healthy options for brekkie and lunch?

I will try and still do oatmeal for brekkie.
Healthy cafe lunch.
Bring healthy snacks in my purse. Healthy snacks could be the key! :)