Hey there, hi there, ho there, Crystal.
You're as welcome as can be here at planDisney! I bet your momma heart is beyond excited to make memories with your family of Mouseketeers at The Most Magical Place on Earth in only a matter of weeks. Seeing the magic through your little ones' eyes will be an unforgettable experience for you.
Personally, I love the
Park Hopper option and use it frequently on my trips back "home." Pricing for a theme park ticket with the Park Hopper option varies by day. You can
view the pricing for the day you need when purchasing your tickets. If you plan to park hop, I suggest you get to the theme park your
Disney Park Pass reservation is for at least 45 minutes before the official
park opening time. If you are staying at a
Disney Resorts Collection hotel, you'll be able to take advantage of
Early Theme Park Entry and enter the theme park 30 minutes ahead of its published opening time so you would want to be there 30 minutes ahead of the early entry time. Park Hopper hours begin at 2:00 p.m. each day and end at the park’s scheduled closing time. Keep in mind that the ability to park hop is subject to a park's capacity limitations.
Considering the ages of your children and the fact that you will likely have to use
Rider Switch, I think your best bet would be to choose one park and really take in all it has to offer. If you choose this route, I suggest you go to
Magic Kingdom Park and get there as early as I referenced above. Your 4-month old would be able to go on many of the attractions with the rest of your family, and there would be plenty to do to fill your day with. Take the money you saved from not adding on the Park Hopper option and put it towards having a special meal instead.
Chef Mickey's inside Disney's Contemporary Resort is a short monorail ride away from Magic Kingdom Park, so you could easily dine there with Mickey and his pals sometime during your day.
Focusing on one park also gives you the ability to go back to your Resort hotel for a midday break and nap if needed before heading back to Magic Kingdom Park for the evening to experience a few more attractions and catch the fireworks in
Disney Enchantment. If you don't want to leave for a midday break, there's a covered area tucked away by Pete's Silly Sideshow or the park's
Baby Care Center that are great to take your youngest to for a quiet place to rest for a bit.
If park hopping is really important to you though, I say go for it! You know what's best for your family, and you will make treasured memories no matter what you decide. If you do park hop, get to your first park as early as possible and be there ready to enter your second park at 2:00 p.m. on the dot. Either way, make sure you bring a stroller so your youngest Mouseketeer can nap if they need to.
Crystal, I hope this helps. If you have further questions, please stop back by planDisney. We'd be happy to help!
See ya real soon,
Alyssa