Why go to Palm Sunday and Easter Sunday, but skip the feasts in between? Yes, nothing in between these two is obligatory, but it's like eating the appetizer and then jumping to the sweet dessert but missing the main courses.
We grew up going throughout Holy Week, but I imagine it's kind of weird if you don't: one Sunday it's really ominous—Jesus is headed for a showdown—and then you come back the next Sunday and he's already risen? Weird.
Come to at least one Triduum service a year. Try the steak; eat some potatoes.