Punat is a village some km. far from Krk town. The main reason to go there is to take a boat to Kosljun Island to visit the Franciscan monastery (read tip; Kosljun monastery).
In Punat there are several restaurants, cafes and shops.
Northern Adriatic, in particularly the Kvarner Bay, is famous for very strong north-eastern wind called "bura". Sometimes, especially in the winter time, this wind attain speed of over 180 km and the bridge has to be closed for traffic for security reason.
I do not recall if this ever occured in the summer time.