We have a person who can't walk far. Do you have drop off area at hard? rock

No but they have scooters to rent

Celebrity Circle is the closest if you aren't staying on property at Universal.

I saw a few people being accommodated with these carts. And everyone respectfully moves over when needed.

No but you can rent a Motorized cart to Ride around They have handicap ramps you can ride in and they have tables for people with the motorized carts