I'll join the club. My wife is also from Batangas and I spend lots of time in Anilao also.
My wife isn't a diver and after about 1 day in Anilao she starts to get bored - 3 days, forget it! There just isn't enough to do to keep the family, especially the kiddies, amused at most of the resorts there for 3 days. I have brought non divers with me to Anilao but I'd only do it for an overnight at most. The beaches are all rock (with a fair number of sea urchins and other critters) so not very kid friendly. You can take the family on a boat trip for one day out to maricaban and sombrero islands, it's a really pretty trip and fun for people not used to being on boats (can be kind of scary for landlubbers on a pitching banca though). It's fun for them to see what you get up to when you are diving and also check out the nice beaches on the islands. After one day of that though you've just about run out of things to do.
If it were me I'd be tempted to take your family over to White Beach in Puerto Galera. Take one of the ferries from Batangas pier that go directly to white beach and it saves the hassle of switching to other transport in puerto galera so the travel time really isn't that bad or much of a hassle. The ferries are extra big bancas and the weather at that time of year should be pretty fair and reliable. The whole trip shouldn't take more than an hour and a half. Now, the drive down from Manila is another story, especially at christmas . . . but you'll face that wherever you decide to go.
2 years ago we went to White beach for 4 days just after Christmas. My son (12), a friend and I are divers and my wife, mother in law, daughter (4) and a friend aren't. We managed to balance things quite well and there was enough to do to keep people happy and amused for the 4 full days. A day on the beach, next day a trip into the poblacion in puerto galera, motorcycles and a short trip to the outlying hills, etc. It was especially nice to have a pretty beach for the kids to play on - kids are never bored when they have about a kilometer of sandy beach to explore!
If you do decide to stay in Batangas you could also go to places up the coast in the Nasugbu area. Unfortunately, I'm not very familiar with the diving up there though I've heard nasty stories about dynamite fishing gone wild. On the other hand though, there has been a lot of attention the past year to protecting mantas that seem to be somewhat common up there. Hopefully someone more knowledgable will chip in some advice.
Good luck and have a fun trip!
PS If you have 8 full days to yourself you ought to consider doing some diving in puerto galera also. One fun way I've done is to go to anilao first and then after a few days have a banca bring you over to puerto galera. On the way go to some of the dive sites that are a bit further out like verde island / San Agapito point (wow, what a great dive! - you could easily spend a 3 dive morning there) and then have the banca drop you off in the afternoon at puerto galera (actually easier to go straight to Sabang beach where all the dive sites are, closer too). Do a couple of days diving there and then have a prearranged pickup with your banceros in Anilao to get you in the morning and then hit a dive site like Malahibong Manok on the way back to Anilao. Lot's more fun than spending 2 full days travelling to the batangas ferry pier and taking a big ferry over and back. This way you don't miss out on 2 days of diving and you get to go to some of the less travelled to dive sites along the way!
