Here it is ... footage showing Conor McGregor stomping out a cell phone in front of the Fontainebleau hotel in Miami -- and it's LOUD. Also, As Lori Loughlin traveled from Vancouver to L.A. Tuesday night to surrender to federal authorities in the college bribery scandal -- which got her daughter, Olivia Jade, into USC -- Olivia spent the night on the yacht of the Chairman of USC's Board of Trustees ... but she's off the boat now, TMZ has learned.