It's going to be a hassle.
You will be told OVER AND OVER AND OVER that "your insurance won't cover the sky falling and the world ending" You must bring your proof of insurance. You MUST learn to say "NO" loudly and clearly to the "upgrade you must have because you won't all fit" (This will be true if you rented the biggest thing on thier website. My brother was told "you won't fit" with his one kid in a Full size LOL!)
"Did you know that if the world ends you will be responsible for the car cost"? (Seriously, that's the ONLY thing they didn't try with him! LOL! They claimed his credit card nor insurance would cover ANYTHING, accidents, theft, etc... )
Took him 90 minutes to rent the car and he was first in line! READ the contract, even after he told them NO on insurance, they checked "yes" and said "Initial here" If he hadn't looked. OPPS!