Check your contract.
We ordered an Open Range at the end of March - in the contract right above where I signed was this:
IF YOU CANCEL THIS PURCHASE AGREEMENT REFUSE TO TAKE DELIVERY OF THE VEHICLE ORDERED, EXCEPT AS PERMITTED BY LAW, YOU SHALL,AT OUR OPTION FORFEIT AS DAMAGES
So should something go wrong between now and May/June when we get it, I can walk away and be out $2500. But they may give it back. It's all up to them - nothing wrong with either option - you signed the contract
One option that may be worth asking about if they won't refund the deposit is to give it back to you in the form of a credit for another RV at a later time. Costs them nothing and if you don't use it they keep the $$.