Are you having fun?
'Divertendo' = di-ver-TEN-do. 'Stai' = STAI — one syllable.
Use this to check in with someone at a party — especially if they seem a bit quiet or isolated. It shows social awareness and care. The question also gives them an opening to express how they are feeling and potentially signal if they want company.
'Divertirsi' (to have fun) in the present continuous: 'stai divertendo' = 'are you having fun' (literally 'are you amusing yourself'). The present continuous ('stare + gerundio') in Italian describes actions happening right now — at this moment of the party.
Come stai andando?
How are you getting on?
More general check-in about overall party experience
Sei contento/a di essere venuto/a?
Are you glad you came?
Reflective question about the decision to attend
Hai bisogno di qualcosa?
Do you need anything?
Host-appropriate caring question
The Italian instinct to ensure all guests feel included ('a proprio agio') is a core expression of Italian hospitality. A good Italian host or socially aware guest will actively monitor the room for anyone who seems isolated and take action to integrate them. Leaving someone out is considered a social failure.