So our journey is

MAN (Manchester UK) - ATH (Athens) - Easyjet

5 hour Layover

ATH (Athens) - AUH (Abu Dhabi) - Wizzair

There are 3 of us on this trip (myself, wife, daughter) and only checking in 1 fullsize suitcase.

so my question is, when we land at Athens, we will already be airside, so I thought it would make sense that my wife and daughter just stay airside, find the gate for our next flight and just wait there.

whilst I go check-out, collect luggage, and basically re-check-in the luggage for the ATH-AUH flight and then obviously go through security again and then meet them at wherever our gate is for the flight.

It makes sense for just 1 of us to do this instead of all 3, so I was just wondering because we are getting 2 different flights with 2 different airlines. Do we 'all' have to check-out and back in again or is it OK for just me to do it?

Thank you in advance for any advice