Don't listen to these guys. It's going to spontaneously combust taking out your pets/children/wife/house or whatever you find near and dear to you. Seriously though, they're right, it's a snowboard, it'll be fine without some wax on it for a few months.
A big reason why waxing before storage is suggested is to leave a coat of wax on the edges. That protects them from humidity, etc. and the pitting that comes from rust. You may want to have a look at your edges.