Wizard101 Grizzleheim Main Quest Line Guide - Final Bastion
Maintenance is happening in about 90 minutes after this post. For those having issues with Grizzleheim, KI is putting out a patch to address that issue where you can't get the questline. :
Quest:Grizzleheim Quest Tree - Wizard101 Wiki
I think this is the most xp a grizzleheim quest gives : r/Wizard101