Today, she accepted his invitation to be a special guest, along with husband Anthony and daughter Emily, 2, during town's First Night celebration on New Year's Eve.
The town will also have its end-of-year run into the ocean - "the polar bear thing," Soifer said - but Heidi won't be taking part.
"Oh no," she said. "No. That's not for me."
In the summer of 1985, Heidi Mozzo was 6-year-old Heidi Werstler of Earlville, Pa., enjoying her family's yearly O.C. vacation.
She and a friend from the beach pestered Boardwalk merchants until they found a bottle for the contest.
Heidi's mom, Bonnie, filled out the form that went inside, and her father, Harvey, made sure the cap was on extra-tight.
The bottle was dispatched, with at least a dozen others, either from a boat or off the Music Pier at Moorlyn Terrace, Soifer said.
Mozzo doesn't remember who gave her the bottle, and didn't see it launched.
"I remember that Channel 6 was there, because they were interviewing kids that were there, but I never made it on TV," she said.
Then, a couple of week ago, the bottle was found by a worker at Sanderling Resort & Spa in Duck, N.C., on the Outer Banks. The resort contacted Soifer's office, per instructions on the form.
Mozzo, who processes payroll for a large corporation, said she hasn't been to Ocean City for years, because recent coastal getaways have been to Myrtle Beach, S.C., popular with her in-laws.
But she still fondly recalls Ocean City's rides, fries, funnel cake and Mack & Manco's pizza.
She's also hoping her equally surprised mom can go. After all, she filled out the form that started the bottle's great adventure.
Contact staff writer Peter Mucha at 215-854-4342 or email@example.com.