Is this revised itinerary good for 2 seniors and 1 in 20s?

First of all thank you to all the commenters, you have all been helpful. We will surely have fun!

Context: this is my first post in this matter

https://www.reddit.com/r/AskChicago/s/v67zrNEh0N

Tldr: parents have slight mobility issues, museum walks might be hard. 3 days 2 nights but the ETA and ETD is slightly before lunch.

Comments say that Navy pier and magmile is not that important. We need to take the bus more and uber, parking is extremely expensive and kinds far away from the landmarks. The original itinerary is probably too jam-packed

Revision

We got rid of those along with Hancock trip. The Lincoln zoo and closeby places entirely depends on the mood on the last day, but since it is free we can maybe check it before after checking out and going home. First day is still a bit packed but they didn't really want to rest in between so.

Day 1

Arrive at about lunch at the hotel, freshen up a bit (check in is 3pm but we will just use the bathroom and leave the stuff)

*Take bus or uber towards Art institute, as much as possble take at least 4 or 5 hours there. Maybe check the Millenium Park

*Go to CAC boat cruise, finish up to maybe 8 or 9, preorder the pizza

* Walk to Lou's and eat a bit and take out some. Go back to hotel before 10 pm

Day 2

* Take the bus and reach fields complex at 9 am, so wake up at around 7 am.

* Visit Fields museum 9am spend 4 to 5 hours there

* Take a break and eat some food maybe hotdogs near there

* Go to Shedd Aquarium at 2pm and spend 4 hours. If we didn't go to Millenium Park

* At 6pm we might chill near the lake

*7:30 pm if we still have energy we have energy and ddint decide to visit Millenium on first day then this is the time if not we can always go on third day

Day 3

*6am last day to check millenium park if we already have we will just pack up, and visit the zoo at 8am

For this we will get the C3 pass. We will not use a car anymore so no more spothero.

Are there plenty of wheelchairs in the museums?

Thanks