I LOVE WATER. So I took 24 bottles of Dasani with me in checked luggage. 24 bottles on sale cost me $4.99, but at WDW they're $2 a pop or so! I drink like a fish

, there was no grocery stop, so this was the way to go for me.
They were at room-temperature and did not break/leak in luggage but Inever overstuff my bags to begin with. My only hint is to pack your water (if bottles) along the back and bottom of your suitcase so it doesn't get top heavy and tip over when you rollit along or stand it up.
Most people don't because:
1)
It'll break in the luggage. So don't overpack the suitcase it is in or bring it in carryon.
2)
They're getting a grocery stop/WeGoShop delivery/UPS delivery anyway. But does not happen with everyone.
3)
It's another heavy thing to bring. It is unlikely to send you over the weight limit if you are packing lightly (overall). If you are already a heavy packer, then--yes this is probably not a good idea.
4)
It will bust under the lack of cabin pressure. I don't believe this to be true. Most "pressure" breaks (crushed Coke cans, burst open conditioner bottles, etc.) are from poor packing, the pressure of all the other items stuffed into the same case.
My thoughts? Since you've been thinking it over, give it a try. Either way let us know how it all turns out!