Hey there, Sung Jin!
A magically warm welcome to planDisney! Thanks for dropping by with your question! I am so excited for you to experience the magic of the Disneyland Resort for the very first time!
Disneyland Resort Rules state that bags may not exceed 24” long x 15” wide x 18” high and do not have wheels. It sounds like your backpack carrier may fall outside of those measurements. So my suggestion is to utilize a stroller instead. Guests are permitted to bring strollers as long as they fit within the
stroller size guidelines. Strollers must not be larger than 31" (79 cm) x 52" (132 cm) and wagons, including stroller wagons, are not permitted. If you decide to bring your stroller with you, I recommend that you measure the width and length of your stroller from the longest and widest points to double-check the sizing before your visit.
Please note that
Stroller Rentals are available if you prefer to leave your stroller at home. You can find Stroller Rentals outside the Disneyland Park Main Entrance adjacent to the
Kennel. Strollers are rented on a first come first served basis, so if you prefer to rent a stroller, be sure to arrive early. Rental strollers can be hard to distinguish in a sea of strollers. I recommend fastening something to the handle that will make it stand out from the rest! An iconic Mickey balloon should do the trick!
I hope you have a wonderful time at the Disneyland Resort! Please come back with more questions in the future!
Tiffanie