We did that at Christmas last year. I had the nerf gun with the 6 shot clip, and I bought the dds a gun with the six loading revolver type. They looked happy when they opened their stockings and saw the nerf guns, but not so much when I ambushed them with mine underneath the couch.
Looks like you might be off the hook. The newly revised newly revised new plan is to go to BWV for 3 nights and then onto VBR.
The kids also love building forts out of any furniture that isn't bolted down- which is everything. I see some good battles coming up.
Also, you need a ticker.