@tim: She said “pump”, not “albatross” 
!
Wouldn’t it be easier to switch back to MDI (just for duration of hols?). Especially if you’re going to embalm yourself with sunscreen…infusion set adherence’ll be {presumably} problematic…and how hot/cold is the pump allowed to get – can you shove it in a cooler bag, like insulin pens? Hope pumpers have more answers than this question-mongering injector.