Very fun and flavorful module.
It was quite amusing how my players got wary of the "mind controlling" cats and started chasing them away; this came back to haunt them later when there weren't enough cats willing to bond them anymore to go around. Only a few players got to leave with the cat miniatures I printed out of cardstock (so sad).
If anything falls short in this module, it would be that the two castles (the Bonus Objective castle and the "final boss" castle) were relatively empty of anything of note for their size. In addition, the Bonus Objective for the bandits seems to just be there to foreshadow future developments in the Border Kingdoms (with the Call to Action at the start being a somewhat ham-fisted attempt to get the players invested in said Objective). I would recommend combining the two castles together, with the boss having taken control of the bandits to do their own bidding and better defend their base. If some of the bandits (maybe the leader and/or the priestess) have managed to avoid said control, this also opens the possibility of them forming a grudging alliance with the players to take down the more obvious, mind controlling evil.
[4 of 5 Stars!]