I suggest that you do not take the tongue ring out at all while on your vacation. You may not get it clean good before you put the ring back in and it could cause infection, swelling, and food can get stuck in there and rot. ALL of that would cause bad breath and many problems.
This question can not be answered directly. Eveyones body is different and heals in a different way. Consider if you have your ears pierced. If they dont close up after leaving them out for a long period of time than perhaps your heaing process is slower. You may need to ust pop it on every night for a few seconds.