We'd like to take a week or two off this fall.

The no-brainier would seem tb to leave our garage door open about 8 inches, lock
the door from the garage to the inside of the house, have the cat's bed, food,
and water (already there...) in the garage; and have my son-in-law look in to
check food/water on the way home from work every day.

The fly in the ointment is the neighbor's cat, which seems to have some sort of
eating disorder.  It's been getting fatter and fatter for about a year now. Nice
cat, but with a bottomless appetite.

When the garage door is open, it will go in there and eat everything in sight,
nonstop.  Even when our cat's bowl is empty, it will rush in and lick the bowl
to get any crumbs.   Consequently, we have to manage the location of our cat's
food/water depending on whether the neighbor's cat has access to the garage.

SO: can anybody think of a workaround short of boarding our cat somewhere else?