To BrennaRN:
My mother has also had both knees replaced, so a wheelchair for her is mandatory. Usually 4 or 5 in our family group, so using the handicap entrance is not problematic. People see she is older, and it is apparent she needs an assist.
Now, you're a youngster, and some folks might be suspect if you roll up the exit ramp and spring out of the chair to board a ride. On the one hand, you have a legitimate need for the chair and you should not pay them any mind. On the other hand, if you rise slowly, hand on hip, and cautiously make your transfer to the ride vehicle, those waiting in line would be shown a reason for your chair, and why they may be waiting a little extra. Think of it as a small performance to enhance other guests' experience. Your own little sprinkle of pixie dust.
Myself, I don't care if CMs allow someone coming up the alternate entrance to get in front of me. I don't care if there is an obvious reason or not. I know CMs are monitoring the entrance and if they let a party in, it is none of my business what the reason. The main thing is, get a GAC from guest relations, ask them how to use it, and then do your best to use it properly. You'll find CMs very accommodating.