Just got back from a mattress run to HP Ontario (CA) and the FT clerk gave me a hard time about the GC. She kept telling me I needed to give them to her at check out. I did this 2 days ago at this location, no problem and have done it several times at HR OC. I finally had to just say "Can you just take them? I'm not staying the night". I really don't understand what the problem is...they'll take your cash, credit, etc up front but not the GC? She finally agreed so we'll see if they show up correctly tomorrow!