Any tricks to rapidly cool refrigerator?

Here's what I would do. Get one of those digital thermometers with a remote sensor. Put the remote sensor in the fridge allowing you to monitor the temp without repeatedly opening the door, then test it out. I had one of those small 3-way fridges in my pup and it did seem to take quite a while to cool off, especially in the summer. On the other hand, the Dometic fridge in my new TT really cools off fast. Haven't done it in the middle of summer yet, but on a moderate day, like 75 degrees, 3 hours was plenty. I know too from the pup that having a fan on the cooling unit will definitely help.