I am in my 70s and have been on 53 cruises and I have never had a problem on any ship on embarkation day. I check my bags in before I get on the ship and carry my backpack for my necessities. I go to one of the sit down restaurants and have a nice leisurely lunch. There is plenty of room for my backpack, as well as my husbands. We have never had to worry about sitting in the sun, because one side of the ship is always shady. If you go down to one of the lower decks Like deck 8 they have wonderful lounge, chairs, and couches to sit on. There are also plenty of bars and lounges that have tables and chairs if you want to go sit and relax indoors. Even if you choose to bring your luggage on find a nice, quiet place to sit down, and relax and enjoy your day. Read a book or chat with the people you are with. People watch. Look at the scenery. I am a firm believer of making your own fun. Life happens but how we deal with it is up to us.