Travelling out of town or out of the country should not disrupt you regular exercise regimen. Check out available facilities and include exercise in your itinerary. You can also bring along a few simple gym equipment like skipping rope or an elastic band if you want to exercise at the comforts of your hotel room.
When being in an unfamiliar place it can be all too easy to eat what is convenient and readily available. To help you stick to your diet, check out healthy options within the area. You can always ask in front desk for assistance.
Instead of grabbing a quick bite at the cafeteria or a nearby fast food chain, bring along your lunch by storing it in a brown bag. This will give you better control on what type of food you eat and how much you consume. It can be good idea to prepare large batches of meals so you can bring along extras for your lunch.