What's stopping a level 1 from:
- Using a Huge Ogre Cache (1000 GR)
- Getting a port to Warspear
- Having a friend fly them to his garrison
- Buying 10x 20% XP potions
I assume there is a reason why this is not possible because I've never seen anyone do this. Are you not able to go into someone else's garrison before you have your own?
EDIT: Not possible, Ogre Cache has a level 90 requirement that for some reason was not showing when viewed on a level 100 character.