Devotee is a related term of habitue.
As a noun devotee
is an ardent enthusiast or admirer.
As a verb habitue is
An ardent enthusiast or admirer
- He was a devotee of Arnold Schwarzenegger.
A fanatical or zealous believer in a particular religion or god
- a devotee of classical music
- devotees of Krishna
- devotees thronged the temple
One who frequents a place; a denizen or regular
*:At half-past nine on this Saturday evening, the parlour of the Salutation Inn, High Holborn, contained most of its customary visitors.In former days every tavern of repute kept such a room for its own select circle, a club, or society, of habitués , who met every evening, for a pipe and a cheerful glass.