How can I leave the bridge?

Hint 1 of 7:

Have you talked to everybody at the carnival?

Hint 2 of 7:

Talk to all the people and wave your hand over them.

Hint 3 of 7:

Talk to the person next to Fortunato and taste his wine.

Hint 4 of 7:

Talk to the bald man and look at the woman with the mask.

Hint 5 of 7:

Talk to the woman standing near the statue.