We arrive anytime from mid afternoon on a direct flight upto midnight if indirect.
Depending how much time we have we get to hotel, nip to supermarket, DTD, a snack(crisps or something unless hungry then have a McD or similar) stay awake as long as poss usually fall asleep between 11-12, set alarm for 7am, I often wake just before it goes off for an early start in a park.
Edit, Wifi is also 1st thing we check before unpacking, if that doesn't work it's back to reception for another room.