yes there is storage under the bed. in fact it is two level . Most are 50amp and I do not know of any that are 30 amp, but I have been wrong before.
this is the link to the RES321 posts. there are 29 pages of questions and answers.
http://www.irv2.com/forums/f272/coug...res-89806.html
I don't know how to make it a clicky so just high lite and copy and paste. the wiring for the bedroom A/C is $125 option