Favorite:
1. Everyone is super friendly.
2. Extended store hours.
3. Country music.
4. You really can basically do whatever you want.

Least favorite:
1. The sales tax not being included in the tag price. Makes for some surprises at the check out if you don't know this!
2. the fact that walking anywhere isn't really an option.
3. Tipping. I suck at this.

There's probably more, but this is what I can come up with right now :)