The big schooners used to have crew changes and provisioning there - I am talking recent - the last few years - not 'the old days'.
Spirit of Massachusetts, Harvey Gamage, Pride of Baltimore, Roseway etc.
Use the western ebd of the beach - closer and shorter walk to airport instead of the Hotel part of the beach.
Probably load luggage and have your mate run it out to the boat, walk up to the beach bar with your guests -- if that is what makes you want to do this, then have the dinghy pick you all up down the beach again later.
Overnight can be rolly - especially for new sailors, Brewers bay or Water Island are flatter and not too far if that is the case.
There are not really any dinghy regulations to concern you -- Sundays are MUCH busier!