You can just prime it and seal it. It might foam a bit when you want to tap it. (I don’t know what tapping mechanism they use).I guess it would go stale. The only real difference to my bottling at this stage is that my bottles get pressurized (by fermentation) after I bottle. They sit around for weeks until I put some in the fridge to start drinking that batch.
I’d be ok with treating as I do regular
Bottles.