The vacation rental marketing company VRLBI, which also works with about 20 area real estate firms, saw the demand for LBI summer rentals raise the roof on the capacity of its internet server twice this summer. A doubled volume of website visits is one measure of how compelling a shore vacation has been in the COVID-constricted summer of 2020.

“It’s been a record-breaking rental season as far as occupancy. I could have filled – we could have used – about 300 more listings; the demand was that…