Hundreds of celebs, a $500MILLION spend... and one loose drain cover that threatened to scupper it all! Inside the world's most expensive F1 event EVER in Las Vegas - and why it could turn out to be the best race on the calendar

BEN NAGLE IN LAS VEGAS: 'For all the s***-talking about Las Vegas, that actually turned out pretty well.' Walking down the strip in the early hours of Sunday morning, one fan summed it all up.