>>21392595Bottles, once opened, need to be refrigerated for food safety.
Additionally, it's annoying having to pack condiment bottles, bring them to the outdoor activity, then bring them back and return them to the refrigerator.
With the packers, I can just grab the exact amount that I think will be needed. If they're all used up, then there is nothing more to think about. If there are some leftovers then they can be brought home, but if they get lost it's not a big deal either.