As long as you're not the bus driver, I find it hard to imagine that you'd ever have to prove what all the pills are in an unmarked pill container. I fly domestically on a regular basis and no one cares about pills. I have a 7 day container with a few vitamins as well as prescription meds. I do believe there is a law somewhere that controlled substances need to be in their prescription bottle. I guess if I get in some kind of trouble while travelling, controlled substances not in original container would be one more of my problems. I'll risk it, as it's so much easier to have all my meds in the travelling 7 day container. My biggest concern is head lice on the airplane pillows.

Hope you have a fun holiday.