I am not familiar with the Pride. If this is a Carnival Ship, we have been on the Elation a number of times and it was easy to get around. My wife does not need a "wheel chair accessible" stateroom but has a difficult time with bathrooms that have those high sided bathtubs used to take a shower. She appreciated the stall showers on the Elation, which is rather large.
When you arrive for embarkation be sure to let a staff member know you require use of a wheel chair. For embarkation in Los Angles they take you to a special, counter and escort you onto the vessel to your stateroom. I assume this is standard practice for Carnival. The same service is provided at disembarkation.