One of the things that I always tell my sitters:
We have a 6 ft. fence around the back yard and I would prefer that they only take Sissy out back to play or do her business. In my neighborhood, people are really bad to let their dogs be off- leash in their front yard, garage, etc. - some are big dogs.
I am afraid that we will be walking on leash like we are suppose to be and be on the sidewalk and a big dog will run out and attack Sissy.
I had her on leash in MY front yard and the neighbor's dog came running at us in MY yard and was barking and growling at us.
There is a leash law in my city but people just seem to ignore it.
I would tell them to watch for her poop/pee time so they know how many times she went each day.
Clean water everyday with a washed bowl
Of course, vet numbers. Call your vet ahead of time and ask about after hours - do they answer - if not - who would you call?
(My daughter just experienced this - her vet doesn't answer after hours or on Sundays-she found a 24 hour vet in a nearby city) Her beagle ate several Claritin D pills.
Does your little one get in purses/luggage that they might bring? My Sissy would...
You might provide a place up high for their luggage.
How many treats they can give each day - I normally put each day's worth in a baggy. Chew treats available.
AND what everyone else said.
Enjoy your time in Maui - I am jealous!!!