Jorge Gonzalez, who owns SkyWords Advertising, said he might have to. He said his business had lost $42,000 because of Mr. Trump’s visits, during which his banner-advertising planes were grounded. He hopes to last through May, but his wife said that at this rate, 30 days was more likely.

“We are hoping his visits slow to once a month,” Mr. Gonzalez said.

This isn’t the first time a president’s travels have caused local disruptions. President Barack Obama’s visits to Hawaii were a source of frustration for pilots and aviation businesses there that had to abide by similar restrictions. And President Bill Clinton’s frequent visits to White Plains during his presidency brought additional chaos to an already busy Westchester County Airport.

Sascha Bennemann opened Costa Palm Beach, a Mediterranean restaurant at the Esplanade shopping complex at the east end of the county’s toniest shopping district, Worth Avenue, just as Mr. Trump began his regular trips. On the second Saturday in February, when a two-mile stretch of South Ocean Boulevard that runs in front of Mar-a-Lago was closed, cutting the town in two, 70 people did not show up for dinner, amounting to a loss of about $5,000, Mr. Bennemann said.

He showed a photo of himself golfing with Mr. Trump last year, to underscore: “It’s nothing personal.”

Mr. Bennemann noted that increased foot traffic had offset some of his losses, and other Worth Avenue shop owners also said the visits had brought an increase in pedestrians.

“For us, we have had some of the best days ever on weekends,” said Tatiana Van Zandt, who owns Trillion, a luxury clothing store. “The hum is exciting.”