When are you going? I'm taking my fiance for his first trip ever in just three weeks!
Tips for travelling in January - pack clothes that you can layer. It can be warm one day and cold (try 26 degrees last New Year's Eve!) the next. Better to have too many warm clothes than not enough. Bring your coat, just in case, and pack your gloves, hat and scarf in the pockets. Last year we brought our coats only for the drive down, expecting the weather in Orlando to be at least warm enough for just long sleeves. I hadn't brought my gloves, but found one of those headband ear warmers in a pocket of my coat - thank goodness! LOL
Plan for late dinners in one of the resorts so you can enjoy the parks all day - especially with all but one park closing by 7 or 8pm.
My mom found these great laundry soap tablets that are individually wrapped for doing our laundry - they're lightweight and not messy. I don't recall the brand, but I'm sure you can find them with the other laundry products at the store.
Bring the coffee filters that have the coffee already in them.
Extra pair of sneakers in case it rains, so you don't have to wait for your shoes to dry out - you can just put on the other pair!
And as a
DVC member...remember to RELAX - it will all still be there the next time you go. Take time to smell the roses (literally....have you seen the walkway surrounded by roses at Epcot?) Take lots of pictures! My all-time favorite tip given to me several years ago was to take a picture in the same place every trip. My sister and I have done that for the past 8 or so trips - we framed a few of the pictures from various years and gave it as a gift to my parents. They were thrilled. It was cool to see the differences over the years, both in me and my sister as well as the park itself. With your son so young you should definitely start that tradition. Imagine looking at 17 years of pictures when he graduates from high school!
Enjoy your trip!!