We use the reusable bags. They go by the garage door when empty, and get returned to the trunk of the car on the next trip out. I have a large cooler bag I keep them in in the trunk. The hardest thing is to remember to take them back into the store. I'm getting better at remembering. Only Aldi charges for bags AFAIK in this area (west coast of Florida). I ask for raw meat to be placed in a plastic bag and then put in the reusable bag.
I will say, we managed to destroy a couple bags by missing the brie cheese in the bottom of one bag, placing the bags back in the trunk, and having the car parked in July sun in Florida for three days before we figured out where the brie disappeared to. EEEeeeewwww!

Then I kick myself when I go to check out! I'll try to do better, argh!
I should put them in the passenger footwell so I SEE them on my way to the store.
Tasty!
) She just has the checker reload the groceries back in to the cart unbagged and puts them in the bags when she gets to the car. 

~TIA