I think ADJ hit pretty close to a home run with the American Audio ELS GO8BT. ...It's 100 watts...get's plenty loud to handle a ceremony. It easily get's 4 to 5 hours on a full charge. The only thing it lacks is a AC outlet or 2 to plug other devices into. ...If they make a new version with a AC outlet that runs off of battery, then I'm buying it in a heart beat. They map at $199 a speaker. I bet they could map it at $249 with a AC outlet or two added in running off of the marine 18 volt battery in the speaker.