I joined towards the last week in October 2013. :D I just googled VMK and found some information about MyVMK. I registered and was very thrilled. I did OVMK, but then it got closed the next day. :) When did you join?
Well to start off theres two games that you could play Fireworks and Jungle Cruise for credits. If you need a guide on tips when playing them theres one on the forums here. You can also collect shells in Captain Quest Quarters which give 10 credits per shell. Also make sure to stop by the Npcs each day they give credits, they also were giving keys and crates out( although) i think this might of ended today not exactly sure. Also make sure to look at the events and make sure to attend Host events to win prizes and the ride a thons as well.