My condolences on being stuck in Lompoc. haha.

My family spent 4 years out there and the school district is horrible (spent 4 years in it myself so I have first hand knowledge of how bad it is).
The area is beautiful though. There's some great places to surf out there(Jalama Beach is one). Surf Beach is great for bird watching(but not surfing as the name would have you think) as it is a protected snowy plover nesting ground. You'll know when it's nesting season out there because there are signs posted and orange plastic fencing EVERYWHERE.
Santa Maria is where the county fair is every year. Santa Maria is about 20-30 minutes north and has the closest "mall" and major shopping outside of Santa Barbara or San Luis Obispo. Pismo Beach is about an hour north and is one of the only, if not the only, beach you can still drive onto at Oceano Dunes. There are a few off road vehicle(i.e. dirt bike/quad) riding areas out there too.
Solvang is a neat town to check out and is about 30-45 minutes away. Lake Cachuma is fun to visit as well and about an hour away. You can rent boats and go out and fish or just cruise around. There are quite a few wineries in the area as well if you're into that. Chumash Casino is near Solvang also.
The La Purisima mission is just outside Lompoc as well and is a fun place to visit. There are also a lot of hiking areas as well. There used to be a piper cub fly in at the Lompoc Airport every year in August, I don't know if they do it anymore(haven't lived there since 2002) but if they do it's a blast! Definitely get the local paper, the Lompoc Record, to stay up to date on local events happening.
There isn't much to do in Lompoc itself but the flower fields are absolutely beautiful to drive through in the spring and smell amazing.
Make sure you check out the tide pools on base. It's neat to see all the sea creatures that call it home. Make sure you know when they're launching rockets off and be outside about 5 minutes before the launch window opens. It's an amazing sight to see/hear day or night. I'll tell you what though, the first time you forget about a night launch and it goes off at 1am when you're dead asleep you will wake up freaking out thinking the house is going to collapse due to the shaking! haha.
On base there is also the Space and Missile heritage center at SLC-10 which is awesome to visit if you're a space nut like me.
Santa Barbara has a lot of things to do and see but Disneykatz covered most of it.
Keep in mind VAFB is about an hour to an hour and a half from Santa Barbara through the mountains and DL is 2.5-3 hours from Santa Barbara depending on traffic.
DL is MUCH smaller and easier to get around than WDW. My suggestion is to make it a weekend trip and stay off site. The hotels are usually cheaper, and sometimes closer, than the on site hotels.
That's all I can think of right now. Hope that helps!