The phrase "attentive visitors" is correct and usable in written English.
It can be used to describe visitors who are observant, focused, or engaged in what they are experiencing or learning.
Example: "The museum staff appreciated the attentive visitors who asked insightful questions about the exhibits."
Alternatives: "engaged guests" or "observant attendees".
But as the night on cardboard boxes progresses, many of the street people warm to their attentive visitors.
Attentive visitors may notice that the bulbs inside antique lamps over the museum's two entrances are flickering — not because they need to be replaced but, according to the exhibition brochure, because they are registering, in real time, transmissions from a lightning-detecting antenna in Britain.
"It was all intended to ensure that the attentive visitor would never in their future life even contemplate voting Tory – though there is no evidence that this ever worked".
"We found her to be a delightful person – very kind to us, very attentive to us as visitors and very personable".
The visitors were especially attentive to Adam Hammill, the teenage midfielder on loan from Liverpool, who has impressed Dunfermline watchers in recent months.
Changi is home base for Singapore Airlines – known for its attentive service and well-appointed cabins – which hauls in visitors in droves.
During the experiences, visitor participation was always involving, active and attentive, and the interest high; statements and manifestations of interest and satisfaction were explicit.
Good recommendation for visitors seeking Village Italian; a welcoming space and attentive service.
Visitors, though not always numerous, tend to be keenly attentive.
On Yelp, some visitors complain about lines out the door on weekends, but we had attentive service and no line.
Overseen by attentive owner Arthur Bisig, this feels like a home away from home, with the majority of guests repeat visitors.
