Frequent is used with these nouns as the subject:
tourist

Frequent is used with these nouns as the object:
bar, cafe, restaurant

be, seem
become
The attacks have become increasingly frequent.

extremely, fairly, very, etc.
increasingly
relatively
She was a relatively frequent visitor to the house.

among, in
Coughs and colds are frequent among young children.

at frequent intervals
She called her family at frequent intervals.

Frequent is used with these nouns:
absence, allusion, appearance, attendance, complaint, contact, contributor, guest, interruption, meeting, monitoring, occurrence, pause, recourse, recurrence, reference, repetition, service, shopper, shower, target, travel, traveller, trip, update, use, user, visit, visitor, washing