AT the rally I noticed that new casitas do not have the tank spigot....when mine broke I made a trip to home depot and installed a 1/2" PVC valve and routed the drain tube out the bottom. The original spigot hole was patched with a stick-on reflector and caulked.
Had fun with you both last week- back to work was a bummer. On the drain, I drilled from outside but make sure you don't hit the bottom of the tank!! I just have a 1/2" tube sticking out the bottom but was thinking that I need a plug of sorts for the critters. not really enough room for another fitting underneath. Any suggestions?