Je ne parle pas le français depuis beaucoup d'ans, je dois te répondre en anglais :-( There are a few seats in the corridors for viewing outside, but only a few. Then of course there are loads of seats in the bars & restaurants but they want you to consume something! I suppose you could sleep there once the places close for the night. But I don't know even if it is possible to book without a cabin, do a mock booking on the Viking site and see. In any case if you choose the "Cruise" option the cabins are dirt cheap (the company makes its money by opening the Duty Free), last August I paid €52 for an economy cabin, that's two nights' accommodation for up to four people!

Unfortunately, yo can't leave anything in the boat. It's huge, with hundred people traveling, so it's impossible to have a safety place where you can leave your lugagge.

Hola! Si se puede, el barco llega aproximadamente a las 9:00 a Helsinki, 10:30 se va a Tallin, a las 16:00 regresa a Helsinki y a las 17:30 parte a Estocolmo. Si decides pasar el día en Helsinki (como hice yo), puedes dejar las valijas en la habitación durante el día sin ningún problema. Saludos, Rodrigo

Guess it depends on the size and sharpness of your souvenir. I would recommend you call Viking Line and check with them. On an aircraft you can carry it in your checked-in luggage, which is not in your possession during the trip but on a ship its a different story. So call Viking Line (and incase they have any issue, offer to surrender the knife at the Reception in the ship, on check-in, and retrieve at de-boarding).......

Если вы берёте круиз с двумя ночевками то каюта в полном вашем распоряжении до возвращения в Хельсинки

В пятницу билеты самые дорогие - финны тоже любят на выходные погулять)) суббота - дешевле. Большие магазины в Стокгольме должны работать и в воскресенье

Можно - там ничего не проверяют при заходе на борт.