Well, I am often times a few days on the road, sometimes also 14 days.
If Paros are fed well, it is not a problem to leave them two or three weeks without food. But the water could be a problem. Too soft water would drop the Ph value over an extended period of time. It is better to mix the water with tap water before a longer trip, which keeps the pH value stable. This is, of course, not for young animals, which must be fed regularly.
I use peat and rain water, so any Ph value can be produced. Is cost-effective and simple