When you are lying under the trailer trying to get a sip of wine from the drain tube, and there is nobody onboard to open the spigot, it might be nice to have a remote controlled valve. Maybe an ap on the phone to control it.
I can see it now, you and your sweetie lying under the trailer on a romantic night, taking turns getting a sip, trying to keep the blowing dust out of your eyes and keep the candles lit.
Then someone has to go back inside and re-fill the bucket!
Am I missing something?