Early in the film, just before John veers into the next lane to avoid a collision, Ella's purse and other items are clearly visible on the ledge above the dashboard. As he strives to correct his steering, it looks like
something may have flown out the open window. The purse no longer appears in the next and subsequent frames (leading this viewer to believe that the lost bag would be an essential plot device). However, the purse is clearly in Ella's possession when they make their next stop.
Various locales throughout Key West and the Florida Keys are used as locations along the Atlantic coastal states (i.e., Key West's Higgs Beach is a stand-in for a locale outside the state). Key West's South Roosevelt Boulevard and its adjacent Smathers Beach are also used as a locale somewhere on the Florida mainland. In addition, numerous scenes that are supposed to take place in Key West actually were filmed in Bahia Honda State Park, Big Pine Key, and other areas in the Lower Keys (i.e, Fisherman's Hospital - which is prominently shown as being in Key West - is located nearly 30 miles away in Big Pine Key). The RV park also shown is quite clearly at Bahia Honda State Park as the closest RV park to Key West - Boyd's RV Campground - has no water access, though on screen their RV is parked right at the water's edge. A scene where the leads get on a trolley ride through Key West also clearly begins at the Welcome Center at Bahia Honda State Park, roughly 37 miles away from Key West proper, though in the next shot, the trolley is in Key West. (Electrically-powered and propane-powered vehicles such as tourist trolleys would never be allowed to go over the Florida Keys' many bridges and highways, nor would anyone wish to do so, as said vehicles have little in the way of shock absorption.)
When Ella and John toast champagne in the hotel, John's glass is half bubbly foam just before they lock arms, then seconds later when they drink the toast the wine in the glass is smooth (like Ella's).