Return Address & Unopened-Bottle Requirements: What to Confirm

This site's own materials are direct that specific guarantee mechanics are set by the retailer, not the informational page — worth confirming those specifics yourself.

What's specifically left to the retailer to define

The refund window, the return address, whether bottles must be unopened, and who pays return postage are all set by the retailer at checkout — details that determine whether a guarantee is actually worth anything.

What to actually do before ordering

Confirm all of these specifics on the checkout page before you order, and keep your order confirmation — a direct step this site itself recommends rather than assuming generous terms.