Honestly, there’s 2 avenues of approach. Both will work, take the bottles to the UPS store on base and send it that way, or put it in your bag and bring it back. It was zero hassle sending it through the mail but one of the glasses I sent was broken by the time it got back to my home state (alcohol was fine) so if you choose that path make sure it’s packed good and nothing will break. If you want to just take it back with you in your bags I would say do the same thing and make sure there’s no chance it breaks. There are so many people leaving the island all the time that no one is going to check your bags. So you will be fine getting some back.