A quick word on airports, because the way they work surprises those used to staffed desks. In Norway, check-in and bag drop are self-service. You print your own bag tag, attach it, and place the case on an automatic belt.
If all this stresses you, know that staffed desks still exist, but they are not very visible: do not hesitate to ask for help, someone will gladly point you the right way.
In brief
- Self-service check-in and bag drop.
- Attach the new tag properly, remove the old ones.
- Staffed desks exist, hard to spot: ask for help.