I have been trying to find out what is usually stocked in a Limousine bar. I guess you could arrange for any number of things with the company. The most common set up I’ve read about is soda and water. This is good for the minors going to their proms and birthday parties. The only liquor specifically mentioned is champagne. Most of the limo services mention their bar having champagne flutes. Then there are some companies that list their limousines having a full bar, but give no details to what that bar contains. I guess I could assume the most basic liquors, such as Rum, Vodka, and Tequila. Then I would want to know what brands. Again it is probably something you have to work out with the company and possibly part of your rental price.
If anybody has any insights or inside knowledge, feel free to let me know.