You are at slightly increased risk for complications being a diabetic, and traveling after surgery increases your risk of a blot clot, which can sometimes be fatal. I'm not trying to rain on your surgical "vacation" plans, but there is no conceivable reason to travel overseas for "bargain" surgery, return home, and hope there will be someone here to deal with some other surgeon's complications, should they occur.
The supposed savings are not worth the risks, and when you have a complication is NOT the time to be searching for a plastic surgeon who will be willing to care for you, not to mention asking him or her to try to "figure out" exactly what was done and how your surgical course went post-operatively having never seen you until the time of a problem!
There are too many cases of patients who have asked what to do here on RealSelf when a problem develops in exactly the scenario you are contemplating, sometimes serious and potentially life-threatening ones. Please reconsider; there are plenty of good surgeons in your area whose total cost is far less than your surgical trip plus even one return visit or hospitalization for even a "small" complication! A tummy tuck is a "big" operation that needs careful followup, drain care, and recheck visits, even when everything goes perfectly! Best wishes! Dr. Tholen