Some interesting posts...I flew Ryanair from AGP to EMA last month and regretted not being able to buy anything from the airport shops as my bag was already quite full (thanks to the 15kg limit on the hold baggage!). It was clear from the airline's regulations that buying any duty-free would not be tolerated if it meant an extra bag of any type. As a precaution I never buy anything that can't fit in my bag.
So generally no cheap booze.
Some people joined the queue for boarding with two bags (one of which was a plastic carrier bag from an airside shop). I expected this to cause trouble but it seemed to be ignored.
Boarding began half an hour before the flight time but the plane took over 45 minutes to load as the flight was full (so we arrived at EMA late). It was pretty tiring standing for all that time (there was a long wait at checkin as well) and I would have paid to reserve a seat just so I could join the flight after the queue had dispersed.