Hello,
I'm flying in 3 days for first time abroad with Aegean to London from Athens, with Airbus A321 and would like to ask a few questions.
Because we will be five people who will travel together, would you propose to choose to sit in the front or in the back? Besides the emergency exits , which rows have better legroom?
Moreover check-in opens 48 hours before the flight, right? It's a good idea to check in immediately after the online check in opens in order to reserve a good seat ,or is it possible some good seats to be released after some hours of the online checkin opening?

Thanks for your help!