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Considering they survive overnight or longer deliveries from mail order shops, I think a trip home from an LFS would be fine. Just make sure it doesn't get too hot or cold.
I think most mail order shops fill the bag with pure oxygen to ship.
When I was in college, we used to get our SW fish from a Fish Store that was 2 hours away. They used to put pure oxygen in the bag for us. If I remember correctly (this was 8 years ago), the owner told us that he would not leave the fish in the bag for more than about 2 hrs with just air in the bag. HTH