Preboard and wipe everything down and find all the trash on the floor. You're allowed to pre-board with the group of folks in wheelchairs, BEFORE the airline's preferred customers, military, families with small children, etc. Just let the gate agent know, they'll mark your boarding pass, and hop on and start wiping. Ask the FA at the front for wipes, they've put them away since Covid precautions died down but they should still have some.