OMG sounds dangerous! But a cool idea when it's not melting ! it would work here, an ice bar(s)... We have quite a few winter festivals here, something every week. I Imagine with this sorta cold they will fix the castle in no time, they have an icicle farm always going when it's cold like this because they can really expand it with strong solid ice because it freezes so fast. This year they also build ice over scaffolding for the slides so they can be higher and a solid structure to rebuild on. The ice castles are really cool and almost surreal when you realize you are in a structure made with millions of pounds of ice.