Thousands of water-revelers plan to converge on Mission Bay for a floating spring break party planned for Saturday, March 20 and Sunday, March 21, according to an announcement posted to the social networking site Facebook. Organized by Floatopia, San Diego, the event skirts the city’s ban on alcohol at the beach that is supposed to restrict drinking on the sand, but not on the water. “Absolutely, we’re preparing for that,” said Northern Division Capt. Chris Ball. “The challenge for law enforcement is that the underlying activity is currently legal. The underlying activity of consuming alcohol on a float of some sort on the bay is not illegal.” Ball said police would work with lifeguards and the Coast Guard to stem any illegal activity and safety issues, he said. The Facebook announcement, which boasts that more than 8,000 people would be attending this event, reminds floaters not to drink on the sand. The party is the latest in a series of spring and summer “floatillas” that have been slowly growing in response the city’s and surrounding communities’ movement to prohibit drinking at the beaches and parks.