Hello, Nicole! Thanks for bringing your question to the Disney Parks Moms Panel!
Woohoo!
Halloween Time is one of the best times to visit the Disneyland Resort, in my opinion. There is fall decor all around both parks, special Halloween overlays on select attractions, and the highlight of the season,
Mickey's Halloween Party. You can most certainly
rent a stroller at the parks for your toddler. They are available right outside the Disneyland Park gates and can be rented for a daily fee. If you have Park Hopper tickets, you can take your stroller with you to both Disneyland Park and Disney California Adventure Park.
Another service available to parents are the
Baby Care Centers. The centers are amazingly comfortable places to change diapers, feed your child, rock them to sleep, or to just take a quick rest from the hustle and bustle of the parks. They even sell sunscreen and other essentials if you run out of anything during your visit.
I hope this helps. Have a spooktacular time at the Disneyland Resort!
-Linda