Sinfonia's code is very similar to any other cruise ship. They have casual, smart casual and formal just like most cruise lines. She is a very nice ship, modern but not too OTT in the Italian way like I found with the over elaborate Costa ship I cruised on. You will find that shorts and jeans are not allowed in the dining room like all other line.
We are sailing from Genoa to Cape Town on Sinfonia on 11 November (19 nights). We quite like to get dressed up but it would appear from comments that dress is quite informal, even on so called formal evenings. Can anyone tell me how many formal evenings there might be on a 19 night cruise, and would a dinner jacket for a man, and corresponding dress for a woman, be over dressed?