Actually thats pretty much exactly what happened on my cruise Eddy.
Went down to maslins, then a commonwhore rocked up, did some ringies in the carpark, down the other end from us, sped off and then bout 20 mins later the cops rocked up.
Didn't say anything or come over to us. Just sat in their car in the opposite carpark, watched us standing around the cars...and then drove off.
I took photos of them using my uber massive zoom lens