UMLUJ, Saudi Arabia—Ahmad Hamid usually spends his summers partying in London nightclubs. Stranded at home in Jeddah this year because of the coronavirus pandemic, he and his friends opted instead to vacation a short drive away in this ancient village on the Red Sea coast.
“We spent our days island hopping and snorkeling, and at night we had barbecues and played music around a campfire,” said Mr. Hamid, a 30-year-old logistics operator.
He…