Laws on alcohol on buses in the United States, unlike air travel, there is no federal law on alcohol consumption on buses. In the U.S. In the U.S., approximately 80% of operators allow alcohol to be consumed on board the bus, usually with a refundable deposit. The short answer to “you can drink at a charter bus rental” is yes, but only if you live in the United States.
You can drink on a charter bus in the United States. Before we try to turn a luxury coach into a house party on wheels, there are some common questions we want to answer. As long as the bus provider allows it and you keep the bus clean, safe and legal for underage passengers, carrying alcohol on board shouldn't be a problem. If you live in the state of California, you must designate a companion over 25 years of age for all underage passengers because of the AB 45 bill, which requires companies that operate party buses to control alcohol consumption among minors.
While you can drink at your own private party on the bus, California law states that anyone under age traveling on a party bus that contains alcohol must be accompanied by a companion who is at least 25 years old. While there are no federal laws that prohibit the consumption of alcohol aboard a private charter bus, it's not uncommon for local municipalities to have their own laws about whether you can drink on a charter bus.