It kind of depends if you're in Nifelheim or not. You can save up to 4 hours per turn (12 hour real-time block), but big stuff tends to come in 4 hour blocks. Eight hours per turn, with up to four saved, making a max of twelve. Big "thing" done for 8 hours, small "thing" done in 4. It depends. Scouting takes an hour, lots of really little things take an hour or two, but basically right now there's duels, training and the pub. Maybe repairs, maybe civil work, but mostly "fight hard, train hard, drink hard, or entertain yourself". Aim for the largest troop (honour, prestige and cash), that's the best trained (training/battles), with great cohesion (training, battles, random time based) with high morale (entertaining and time) and no damage(repairs). Basically, train/entertain/repair-if-needed. Duel and scout if you can or want to.
We can remove damage easily in Nifelheim, so repairs aren't a problem. Just wait until you think the enemy will move or it gets over 10%. Just train, entertain, and duel a bit. To tell you the truth, rather than the fearing the odd injury, we should duel properly instead of doing training duels. Soldiers are our force right now, we have the best healers possible, so more honour for troop size is a good thing. Civil work is out for now unless otherwise ordered.
If you're anywhere else than Summerdale, then you'd probably better ask your lords/mentors/commanders what they want.