I recently went into Mossy Kearny Mesa too, but just for the software upgrade. I had had my tires rotated at Discount Tires for free as most all my tires on my other cars over the years have been purchased there. Car now has 7500 miles since end of last June.
Since I work nearby at first I called to see if they could come to my office parking lot and perform the upgrade as the letter from Nissan had indicted was possible, but they indicated that they did not do that. So, I made an appointment for the next week. Later I found I had a conflict so I called them again and was very easily able to change the appointment for a few days later.
They were very good with the email and phone reminders (which really helps me).
When making the reservation they indicated someone could walk me through what was going to be done and what to expect. The service guy that first met me was friendly, but didn't know the details so he brought the technician. I mentioned I had heard that after the service sometimes the driver's automatic window no longer worked and to please check this. I asked if my radio stations, climate control and charging times would be wiped out. He indicated that he would write down the radio stations and reset them, but suggested I reset the charging times myself. after the service the radio stations were still there. At first I thought the timing setting had been wiped out, but when I started to reset the time it appear the times were still there and all I needed to do was save and click ok and everything was as before.
I did not stay during the service, but signed up for the shuttle service to take me to my office. It took them a little long (about 45 min) before calling me but I took the opportunity to talk with the other folks waiting. The driver was fine and even offered to pick me up (which I didn't expect) but I wanted to walk back to pick up my car for excersize.
Car was given a basic wash
together with the upgrade. Funny thing on the paperwork I signed when I picked up the car it said the tire pressure had been set to 35psi. I hadn't asked for that and since I normally use 38psi and fill with Nitrogen at Costco I was a little upset. They quickly said they would remedy this and I was surprised that they said the use Nitrogen too. Turns out that when the guy was checking the tires the psi was 38 all around and nothing had actually been changed - just something they automitically put on the paperwork :?
Separately they gave me some paperwork that indicated several checks done on the car including brake pad thickness was written down. I thought they would have had to take the tires off to check that so I asked if they rotated the tires. At first they said "yes", then corrected this and said "no" :?
Finally I confirmed about the new manual and found it sitting ready for me on the front seat.
I may use them again because they are conveniently near my work, but will have to keep an eye on and check what they actually do.