Originally Posted by
dynamicvapor
You can ask if they can put you together when you check-in. Best to go earlier if that’s the case, before everyone check ins. Seat assignments are done day off at the check in. Usually won’t be a problem unless it’s an oversold flight and you checked in 10 mins before cut off.
OLCI opens at T-24 so recommending that they go "earlier before everyone checks in" is not good advice. If OP waits until they show up at the airport they might be SOL.
A lot of people have pre-paid or get complimentary seat assignments ahead of time so for you to state "Seat assignments are done day off at the check in" is not entirely correct. The ones without assigned seats are done on the day of the flight.