I'm also in San Diego like Brian42, we have about 7 to 8 factory RAM dealerships in the San Diego County area within 30 miles of each other. That said, I won't take my truck to any of them, since my experience with 3 of them, including my selling dealership service department has not given me confidence of trusting them to do the most basic thing with my truck.
I have never owned a vehicle that made me not trust the dealership to do service, until I bought my RAM. I read that FCA/Stellantis dealerships were essentially last in service surveys in North America, and I certainly believe it now. I don't think they were prepared for all the new trucks, Jeeps and cars they sold these last few years and are slammed. Because of that, they seem to turn little task into big problems due to this. They have high scores in sales, that was a good experience on my part, but their service departments seem to suck.
So for basic services, I do it myself. I rather enjoy doing the oil changes on this truck, I did a full write-up if you look it up, and if you follow my DIY instructions you can do easily without spilling a drop of oil. Make sure to keep your receipts, a log of when you did the oil change and at what mileage, I would also keep the used oil filters, especially the first one until you are out of powertrain warranty, which is 5yr / 60k.
For any problems within warranty, I will have to go to the dealership, luckily my truck has been 100% since purchase. I'm torn whether or not to buy the extended warranty because I really don't want to go back to the dealership should I have an issue in the future.