HI Joan and Joe,
LOL, wasn't sure when the ship was arriving but yes you would be in big trouble.
I live in the area of the cruise ship docks (walking distance easily) about 3 - 4 blocks from the Basillica.

Marche Bonsecours is very close to the docks as is the Basilica, Marche Bonsecours (about 2 blocks from my house) is sort of like a little indoor mall with boutique shops what I would call a walk through unless you want to shop.

As for the St. Suplice seminary, I don't remember that being here, I just called the hubby who is born and raised here and he seems to think that might be in Quebec City, unless you are talking about the Oratory which is really not near the cruise ship docks at all, but he said to ask if it's the Oratory as that is a really big tourist thing so I'm a bit confused on that one.

I also asked the hubby if he ever heard of the money museum at the Bank of Montreal (keep in mind he is in the money business, stockbroker) and he said no mabye also Quebec City as I had never heard of it but of course we could be wrong as you know the saying "you don't visit where you live".

There are a few museums in this area, a couple are "homes" that you visit to see the "way it was way back when", there is one other museum that is right near the docks, I think it's on architecture. The science museum from what I am told is more a child friendly thing, but I've not been so can't really say, just going on what I'm told, it's right at the docks though.

Depends on how much time you really have and what are the priorities of what you would like to see, perhaps if I had more of an idea of your likes ?

I'm not sure what you are expecting at Place d'Armes, it's a street here in Old Montreal, maybe the customs house? but don't know if that is open. You can walk along the riverfront if it's a nice day, it's a really nice stroll.

I hope you are not mixing Quebec City and Montreal.

If you have say 3 hours, and want to stay near the pier, I would go to the Basicllica, and walk around "Old Montreal" which is where the cruise ship docks, you can go into the Marche Bonsecours, there is another church located across the street (on the same side on a corner) which is popular with the tourists and has a bit of history regarding the sea. there is the "clock" which is also at the one end of the "pier" closer to the Marche Bonsecours side, If you go to City Hall and Place Jaques Cartier You will see the 2 "old homes" one is actually across the street from my condo, lol the other directly across from City Hall, and decide if you want to go in. City Hall is nice to see and you can go in and a lot of tourists take pictures of it. There is also a caleche ride you can take for an overview of Old Montreal which I would recommend and he will point out things which you can walk back to to see. Place Jaques Cartier is where there are cafes and generally have outdoor street performes in the summer and nice weather days.

Again, if you want to give me a little more of what you want (photo ops, museums, shopping?) Most of the stores are souvenier type shops with the odd one offering clothing and home things and one being a combo souvenier/fur shop on St. Paul.

I really hope this helps.