Carol - what they'll do is wait in the dark by the Palapa docks for a dinghy running without a light. Then they'll check all the other items listed above and one can hear that cash register sound going "ka-ching" as they tick through their checklist and note the infractions.
Considering that there have been dinghy fatalities in the lagoon due to lack of lighting (and alcohol, of course) this is not a bad thing.
There were instances of them going overboard two years ago during the Heineken Regatta with spot checks as well as license checks (who carries their SRC radio license with them in the dinghy while having a handheld VHF in operation?), but it went all the way to the Minister of tourism within a day and their somewhat overzealous actions were soon curtailed.