If you are able to, you can take care of a lot of things before the surgery - cook meals ahead of time to freeze and eat later, or buy some microwaveable meals. See if you can get a housekeeper to come once a week until your family arrives (trust me, you won't feel like vacuuming and dusting right away). And some insurance carriers will actually pay for this. A shower bench is pretty inexpensive and will help keep you safe while bathing. Paper plates can cut down on the dirty dishes.
I'm sure your neighbors and local family will want to help you out, but you have to let them know what you need help with - maybe things like picking up prescriptions, getting a gallon of milk, even bringing in your mail so you don't have to go get it.
Kay is right, I had to go back to taking care of my then 9 month old daughter all day when my husband went back to work at 2 weeks post op. Honestly, it wasn't that bad, and I'm sure I could have done it sooner than the 2 weeks (don't tell him that!). You just have to learn to pace yourself and lower your standards briefly if necessary. I am a bit of a clean freak, and I had to learn how to let that go a little bit. My health was more important. No one cares if your laundry basket is full or there's dust on your tv - you just had brain surgery and that entitles you to let things slide a bit!
Are there any teenagers or kids in your neighborhood you can "hire" to take care of the pets? Sometimes you just have to get creative, but I'm sure people will be more than willing to help you out.
Good luck!
Lori