There is a lovely OLD church in Old Town (Church of the Immaculate Conception) with some neat history you might enjoy - and you can make an outing from it by touring Old Town afterwards. There is a lot of history, some neat shops, tourist attractions, etc. They've also got some great restaurants there with heaters for outdoor seating, so you can relax and visit with your friends/family. It is also a stop on the trolley line, so easy to get to without driving all around San Diego. Here's a link: www.oldtownsandiegoguide.com
You may want to start a thread in the Meet Ups Room here in the Fora - say you're coming to San Diego around the holidays and would love to meet people - perhaps for coffee, or mass and dinner, etc. Do a search and send a couple of messages to interesting folks. Basically - get the ball rolling and plan your own event - and get the word out.
I went back and forth between Indy and San Diego for about 4 years - met some great people that way - just by posting "I'm coming to San Diego - who wants to get together?!" I highly encourage ANYONE ANYWHERE to start a thread to put an outing together - it's a great way to meet several people at one time - start some new friendships. ALL events on CM are member-driven, meaning regular members like you and I step up and throw out a few suggestions, see who's interested, and we get the ball rolling. SOMEBODY has to do it - if we all waited for the 'other guy' to reach out - nobody would ever meet! I congratulate you on taking the initiative and posting this thread - you're the way to what could be a fun event!