This phrase reminds me of a raunchy song my Dad used to play (on a record!) about a "Persian Kitten perfumed and gray" who met a tom cat on the Primrose Path. "In the after years when the children came....she told them their father was a "rootin' tootin' travelin' man." The singer had a great smoky, whiskey voice.

WELCOME,Alberta

The attractiveness of the Primrose Path is somewhat diminished by another Shakespeare quote. The cynical Porter in Macbeth talks of
"..the primrose path to the everlasting bonfire", i.e. Hell. Why primrose? Possibly because it is about the first wild flower to appear in Spring (in England, anyway) in sufficient numbers to line a path.
P

Hello and Welcome to you, too, Peter