Howdy, Elizabeth! Thanks so much for bringing your question to the Disney Parks Moms Panel!
I am so excited that you will be visiting the Disneyland Resort this summer. As you may have heard,
Pixar Pier will open this summer and, depending on when you arrive, you may just get to experience the Incredicoaster and the other newly-themed attractions in this area. It will be an exciting time for sure! And don't let any of that excitement dwindle due to worries about your size and riding attractions. I have never seen a posted size or weight limit on any attraction, so as long as the safety bars/straps can close, you are good to go. I would even go so far to say that the Disneyland Resort is very accommodating to people of all shapes and sizes!
There may be a few
attractions, however, that are less comfortable to ride than others. For instance, Finding Nemo Submarine Voyage has seats that are rather small and the armrests on Silly Symphony Swings might be a bit snug. I would suggest looking at pictures online and watching ride through videos on YouTube of any attractions that you may be concerned about. Typically they will show the ride vehicles and any safety mechanisms so you will have a good idea if there are any attractions you may want to skip.
I hope this helps. Have a magnificent time at the Happiest Place on Earth!
-Linda