Yes, upon checikin at kiosk in SFO, I was instructed online that I could not have a carry on bag, and had to pay $30 to heck it. Then ,when I got to the gate 2 hours later, lots of people were carrying on their rollerbags. I asked why I had to check mine and pay for it, and flight attendant said she didn't know and very cordially said she would explore refunding my fee.....and did!!! I really appreciated that!