I think a lot of people think of liking a Facebook Page as subscribing, so I won't say any action is needed on your part.
If you ever decide to try to grow the Page (or that personal Page), I think a good way to generate likes is to handle it sort of like a blog, that is, regular updates that are appealing and try to keep them consistent.
I've also found that big jumps in likes come from getting posted photographs tagged, because it starts to get the Page appearing on new people's News Feeds.
And also promotions that revolve around asking users to "like" seem to work too. Like there was a movie website I worked on that promised to release a new trailer if they crossed x number of likes and it worked beautifully.