Pre-Carbonating for a party?

I’m having a party in a couple weeks, and it looks like I’ll still have a couple partial corny kegs I’m going to want to go through, but want to have backup full kegs available if any of those blow out.

Can I force carbonate a couple days before and leave the kegs outside to keep them cold and ready?  In Seattle it’s generally refrigerator temperature in winter, so it won’t be freezing or getting warm.

I’ve never tried to pre-carbonate, usually just do it as I’m queuing up the next keg.  If I can do it, this is going to be a game changer during the cold months as I don’t have extra cold storage on hand!

You can do that, but I’d start more than a couple days ahead.