nightime

I just saw a video and it seems the elevators make a dinging sound when they open.  If you are staying  in a room right by them, will you hear it?

Could someone tell me if nice jeans and nice top are allowed in the dining rooms for dinner?

We went thru a travel agent and picked our available cabin when we booked.

My suite is pretty much across from the technical area on our floor.  Anyone knows if that could be an issue or just nothing I should be concerned about.

We are thinking of switching to this room because it would face land on our upcoming Alaska cruise.  I assume since it's toward the back of the ship, motion wouldn't be an issue.  I have not really cruised since I was really young and really don't remember where we stayed on the ship.  

Has anyone stayed in that Medallion suite?  It is toward the aft and concerned about motion sickness and cigar smoke coming up from the cigar lounge.