Ocean Village and NCL Ocean Pearl are the ships I've cruised on where you don't need to dress up unless you want to. Chinos and a casual shirt/polo shirt seemed to be popular with the men (no jeans/shorts) in the restaurants in the evenings.
I had the same problem with my hubby, so we have booked on the island star for november, he is from accy as wel.
If you want informal but still want good quality, Oceania Cruises offers a casually elegant alternative to the usual cruise experience. Operating like a country hotel, guests never need to wear a dinner jacket or ball gown.
The suggestions so far are good and he will only have to dress up to the 5 & 3/4s. If he will dress up to the 7s then Azamara allows smart casuals. Does he come into that category or is he a born scruff ? Ida Dow.
On the last 8 cruises with any of the major cruise lines, it's always been casual apart from the Formal nights, and then only about 50% bother with a Tux, most chaps where a Jacket and tie, mind you the ladies go to town (figuratively speaking). All other nights it's casual slacks and a shirt/polo shirt. Mind you, during the day there's always some sad bunny wearing a football shirt, no different from any other 4* hotel I suppose. TommyTV .
Azamara is only 'country club casual' so polo shirts and chinos - no 'dressing up' at all...
Dont hesitate and book freestyle cruising on Norwegian Cruise lines NCL We have just completed our first cruise around the Baltic and it was more than we expected. As long as you dont look like a tramp you will be fine, we were. It was brilliant and we are now hooked on cruising. Freestyle dining means eat where you want when you want and on your own or in company. We did both and it was a fantastic experience meeting some interesting people from all walks of life. The Ship was called the Norwegian Dream and it ran like clockwork, we could not fault anything but you always get someone who will.
Please dont hesitate and try NCL we were so taken with our trip we are planning our next one with NCL on the same ship before Christmas. Go and try you will be pleasantly suprised. Yours Al & Stu Edward.