Monday night dinner

On Mondays, the restaurant books the private room for those who lost on Sunday and those who won with a little help. This Monday the private room was very busy. Some clues in this case come as riddles. Not every row and column has to be occupied.

Suspects

• Albertina, the restaurant owner: She's served Monday dinners for thirty years. She never asks who's coming, only how many.
• Bernardino, the assistant referee: He asked for separate bills. He paid his own and three others.
• Cidalina, the sommelier: She recommends red with salt cod and silence with everything.
• Deodoro, the waiter: He carries the plates and hears the conversations. On the wiretap you can hear him asking if they want dessert.