I felt the AM were burning a hole in my spreadsheet, so after dinner with my siblings on the weekend where they "commented" on my upcoming trip with my adult sons (to WDW) I just booked flights to San Diego to keep them quiet. Just DH and I (no
Disneyland allowed

). We were going to go somewhere this fall, I thought maybe Maine but San Diego it is (it's been on my bucket list for a while).
Anyone whose been to San Diego have suggestions. I'm thinking about getting the GO San Diego card from Costco.
We loved San Diego. We were last there in 2010 and are going back this summer as part of a 2 week California trip.
We stayed at the Omni the first time, we are staying an an AirBnb this time.
We were surprised, but loved, the Old Town Trolley Tour.
https://www.trolleytours.com/san-diego
We only did it one day, but all of us agreed that you could use it as your mode of transportation while in the city. We had one driver who wasn't great, but otherwise they were all very informative, funny and helpful. We learned so much about the city on the trolley.
Coronado Island is beautiful, and has a really nice vibe. We took the trolley there, got off and wandered for an hour or two, and then went to the Hotel Del (big gorgeous hotel...) for lunch. It was a beautiful setting but the food was just okay, and SO expensive, I'd suggest somewhere else for lunch. We did go back to Coronado Island another day and had lunch in a little restaurant. It was perfect. It would be fun to rent a bike on Coronado Island as well.
San Diego Zoo is amazing, especially if you're a zoo lover. We are not huge zoo people, therefore we will likely be skipping it this time - but it's incredible. If you do do the zoo, take the zoo tram around the whole zoo first and then decide what you want to go back to see. If you walk the whole zoo you'll exhaust yourself, especially if it's hot out. Balboa Park (where the zoo is) is beautiful, and is also on the trolley route. It would be a great place to take a picnic.
I have heard that the USS Midway is really interesting, we'll be doing it this trip.
I believe that the trolley, the Zoo, and the midway are all on the GO San Diego card, so it might be worth it based on those alone.
Have fun!