Please be careful when taking certain antibiotics -- they increase your sensitivity to sun many fold, regardless of which bronzer cream you use.
Be aware that the half lives for many penicillin derivative drugs, e.g., ampicillin, etc. is seven days. So stopping two days before your cruise, thinking you're safe and the going out into the sun, is a prescription for disaster (and pain).
Look at your prescription labels. If sun sensitivity is one of the likely side affects, contact your pharmacist or doctor to understand how persistent this side affect is even after stopping the med(s).
Amanda, Masaki, as you know I'm no MD. Would you like to add anything here?? (I got really burned (due to meds) one time and don't want anyone else to go through what I went through.
Bill