Does unopened Mike's Hard Lemonade have to be refrigerated?

I have a six pack of Mike's Hard that I forgot about sitting in my garage, none of the bottles are opened obviously. I'm planning on sticking them in the fridge now and then drinking one later tonight, is that safe? Like, I know if they're opened they need to be refrigerated, but what about when they're not open? I don't wanna take any risks lol. TIA!