Hi Kristin, welcome to planDisney!
It sounds like you have some fun attire planned for your magical visit to the
Disneyland Resort! I just checked the
Disneyland Resort's guidelines on inappropriate attire, and a few stand out to me. Attire that is not appropriate for the theme parks would include costumes (for Guests 14 years of age or older), clothing with objectional material, including obscene language or graphics, excessively torn clothing, or loose-fitting clothing which may drag on the ground and create a potential trip hazard, and clothing which by nature, exposes excessive portions of the skin that may be viewed as inappropriate for a family environment. In reviewing these guidelines, it's my personal opinion that Disney onesies would not fall under the category of inappropriate attire and should be okay!
And have you heard? Many beloved experiences at The Happiest Place on Earth have started to return! The traditional character meet and greets have returned, which means Mickey and all his Pals are ready to give out the best hugs and sign your autograph books! AND many of the fantastic nighttime experiences are back as well!
The Main Street Electrical Parade and
Disneyland Forever fireworks at Disneyland Park, and
World of Color at Disney California Adventure Park have all returned! And my personal favorite,
Fantasmic! is set to return on May 28, 2022. Looking at your arrival date, you chose a great time to visit, as you'll be able to experience all of these wonderful returning experiences!
See ya real soon!
Jin