[QUOTE=Hanna;220692]
The other thing that makes it sound rude to me, is that they are not using "please", or "thank you" when they address the sales staff... /QUOTE]

I've been told that if someone is performing their job then thank you and please are not necessary.
Cultures differ - in Spain they usually say "dame (una cerveza)..." literally "give me (a beer.)" No need for "oh, please excuse me if I'm troubling you, but may I please have a beer Sir."