After Disneyland and Disney Sea there is a big aquarium at the next station down from there - a fantastic place to chill out a little after the madness of Disney.
I'm not sure what you want to do after? Are you meaning eating out or activities?
Have you check out the Hato bus tours that are available - it might be the best way to get to see all the things you mention you want to do in the city itself? The link is
HATO BUS|English Top
Hope this helps