The HIAL Barra Airport staff check the beach runways before opening- note thr SUV tracks when landing.
It is a well proven airfield which works remarkably well.
You need to PPR to obtain the 'tide timetable' i.e. the hours that landings are available and/or the timings of commercial flights.
The runway is inspected by the local staff each time and the landing is quite smooth.
I would advice a slightly higher speed to transit the water puddles that always remain.
If you can, at your next airport, try and get the fire brigade (or their permission to use their water supply) to hose the wheels to remove residue sand getting into the bearings/brakes.