Question Best Eats and Sights in Lisbon for a Short Stay

We are a party of 8 that will be in Lisbon for 3 nights before a cruise the end of March. Looking for recommendations on must-visit restaurants and key attractions. We're interested in a mix of traditional Portuguese cuisine and any unique dining experiences. Also, what are the top sights we shouldn't miss? We enjoy a bit of everything - history, art, and maybe some local markets. Any tips for navigating the city or hidden gems would be awesome!