Hello there, Larry!
We are so happy you stopped by planDisney with your question. It sounds like you have a magical visit to the Disneyland Resort just a few days away, and I'm excited to help you make every moment as smooth as possible. From enjoying the sights and sounds along Main Street to stepping onto your favorite attraction, a little planning can go a long way toward keeping the magic stress-free and filled with pixie dust. 
I have some good news for you! 
ECVs and wheelchairs can be rented at the Stroller Shop just to the right of the Main Entrance to Disneyland Park. A few things to consider here are that they are daily rentals and are first-come, first-served, and cannot be reserved ahead of time. Guests are not able to rent them for multiple days in a row from the park itself. Currently, pricing is offered at $60 + tax per day with a $20 deposit, but of course, this is subject to change. If you are hoping to hang on to your ECV for the length of your trip, we recommend reaching out to a local, Disney featured provider like ScooterBug, which offers multi-day rentals and will even drop off and pick up the device from your hotel. 
Larry, now that we've checked that off your to-do list, let's take a look at some of the magic that's in store for you next week! Before every trip, I like to take a look at the 
Entertainment Schedule to get a lay of the land and earmark any must-see shows and entertainment. This helps me to structure our day when I'm planning. When you pull up the calendar, you can choose a day view or a 5-day view to see everything laid out for multi-day trips. Since you are visiting during 
Disneyland's 70th Anniversary, I highly recommend taking in some of the limited-time entertainment offered for this special celebration, like the 
Paint the Night Parade, 
Tapestry of Happiness, 
World of Color Happiness!, and even 
Wondrous Journeys, a magical retrospective on Sleeping Beauty Castle of the history of the Disney story.
Larry, I hope this has been helpful as you put the finishing touches on the magic. If you have any more questions, we are always here for you at 
planDisney.
See ya real soon!
Tara