They can share the water dish, no problem.

They should not share food. Cat food is high protein, which cats need. But for a dog it is too high protein, so the kidneys work overtime to flush out all the extra. Dog food odes not have all the nutrients cats need so, overtime, a cat won't do well on cat food. So, if the cats nibble the dog food, once or twice, oh well. But don't let the dog near the cat food!

We do expect photos of this 2 week adventure!