How soon can I go on a cruise after a tummy tuck?

If healing is satisfactory you should be able to go on a cruise 6 weeks after a tummy tuck, and most other procedures.  In 6 weeks the scars are strong enough so they do not break down.  But for a year after a tummy tuck, or any surgery, you should hide your scars from the sun, and use sunblock.  

Hello Gregarious477981,
It’s a pleasure to answer your questions! In my experience, adequate
post-operative care is vital to positively impact the final outcome.
Travelling after an abdominoplasty (tummy tuck) increases the risks of
complications such as wound dehiscence, and infection. Therefore, I
would strongly suggest you avoid traveling at least the first 2 months after surgery. Best
wishes! Dr. De La Cruz.