Final answer:
Guests can take home leftover wine from their bottle purchase, and the proper procedure is to ask the server or bartender for assistance in packaging it. However, it's important to consider state or country regulations regarding transportation of open alcohol.
Step-by-step explanation:
Yes, guests are allowed to take home leftover wine from their bottle purchase. However, it is important to note that this may vary depending on the establishment's policies.
The proper procedure to take home leftover wine is to ask the server or bartender for help. They will typically provide a wine bag or seal the bottle with a specialized closure to ensure it is properly packaged for transportation.
It's worth mentioning that some states or countries may have specific laws or regulations regarding the transportation of open alcoholic beverages, so it's advisable to familiarize yourself with the local legislation before taking the wine home.