Hi,
DS-5 is our only child so I can't answer your questions about the babe. However, I will say that after we brought him back from the club, he crashed on the bed and we went out to the veranda with a special bottle of wine we brought on board. We stayed up way to late each night just talking and looking at the sea or lights and drinking our wine.
I don't remember if you mentioned your category, but we decided it was worth the extra $$ to have the verandah until DS was older.
I think we were back at the cabin by 10:00 every night and this was still the best vacation ever.
Hopefully someone can answer your infant question.