As the title says. Will be there from Oct 30-Nov 1

Im staying at the JW Marriott resort which has a water taxi departing by S Marco Giardinetti. I will be arriving at Venezia St Lucia by train and need to take this B ferry which takes me directly there? Anyone familiar with it? Will it more than likely be really crowded? Would I be able to buy a ferry ticket at the station?

Hi so i was just curious,I am going to Venice with my girlfriend from the 27th of November to the 1st of December and if there are any italians on this subreddit or venetians i was wondering how is the weather like during this time?Is it flooded?
Because i am really wondering and i cant get any concrete answers on google and i was really curios to know what to pack.
Thank you!!