Welcome Aboard Cindy & Tyler,
I hope you enjoy your cruise on the Golden. What a wonderful was to celebrate Christmans.
I think Penny responded to most of your questions.
I too would advise seeing the Maitre D to reserve a table for 10 each night.
As for formal nights if you plan to eat in the dining room you should dress. If you want to remain casual you can eat up in Horizon COurt.
You don't need formal gowns & tuxedo, but, jacket & tie.
Be sure to read your Princess Patter - daily cruise newsletter. This will let you know allof the activities, along with drink specials for the day.
I do have several albums in my webshots link below with Golden photos.