new to me... wife not being able to cash out

[moneyshot]

interesting thing happened at bellagio this weekend. Right before we left, A friend of mine who owed me $$ came by with 8k in chips to repay me. I wanted to shower before we left so I asked my wife to cash in the chips for me. She went down to the cage and tried to cash out.

They asked her for her players club card scanned it and said "We can't cash these chips out, you haven't player here enough to have earned them." She then said they were my chips from the poker room, but said that I would need to cash them there.

Am I just naive or does this happen all the time?