Canadian snowbirds must buy a supplemental plan to their government-provided coverage for any emergencies during their stay. She’s also not sure how much of a boost RV parks and campgrounds will get. Snowbirds make up 30% of the business for Florida's RV parks, he said. Between vacation rentals and hotels, the city did 5.5% more business between July and September compared with the same period last year. “The amount of people coming on vacation rentals was like nothing we had ever seen.