Hello, Jesus!
Welcome to planDisney! Will this be your first visit to the Disneyland Resort for your family? I'm guessing it might be, at least with your littlest Mouseketeers! So exciting!
I'm sorry, but
wagons and stroller wagons are not allowed at the Disneyland Resort. I know that it can be hard to navigate the parks with multiple kids who need a stroller still! You are welcome to bring strollers to the parks as long as they are not larger than 31" (79 cm) x 52" (132 cm), but wagons are not permitted regardless of their size. I recommend taking a double stroller that meets the park size restrictions for your twins and an additional small single stroller for your daughter. It's a lot of gear, I know! Hopefully you have some adults in your party who can help.
You can also
rent strollers at the Disneyland Resort, although I don't feel like they're the most comfortable option for kids as young as your twins. The Disneyland Resort also recommends renting a double stroller through ScooterBug (you can find their information toward the bottom of the stroller rental page). If you don't already own a double stroller I think this is a great option!
My son was just 7 months old for his first visit to the Disneyland Resort, and I loved wearing him in a carrier! Many attractions allowed me to ride with him snuggled in his carrier, which was great! Some attractions do require babies to be forward-facing, but Cast Members will advise you at each attraction about how everyone can ride safely.
Don't forget about the
Baby Care Centers in each park! They are a wonderful resource for guests traveling with small Mouseketeers. Don't be afraid to take lots of breaks, too. There are great places for your daughter to stretch her legs and explore, like
Mickey's Toontown! My favorite ride with my little ones has always been
"it's a small world" because there is so much to see. My kiddos just lit up when they were tiny, and they still love it now!
Jesus, I'm sorry you won't be able to take your wagon. But I hope these tips and ideas will help you and your family have a wonderful visit to the parks!
Keep moving forward!
Amanda