Since this was never answered, I think I can! At first, there were a few problems with the caravans when the Sutherlands arrived that Alf has been hiding for years, costing the Sutherlands a lot of damages. Him, Ailsa and Joel agreed to pay for half of the damages. To earn money, Rhys wanted to open the kiosk back up. Alf was against this because it would cause competition with the diner. Duncan was dating Jade at the time, started to hate Alf for what he did and Alf thought they were trying to turn his son against him.
Oh right, Ok, Thanks!!