The group doesn't share much chemistry and the couples aren't very interesting. But even shows without potential couldn't ruin a wedding event. Luckily, Perfect Couples didn't and Perfect Wedding was ironic enough to burst out a few laughs. Woods' ability to make a complete fool of herself offers the biggest laughs and makes the episode watchable. But besides that there's really not much going on.
You aren't rooting for Amy and Vance, Rex feels like a whiny sixth wheel who nobody cares about and Leigh is a weak impersonation of Monica.
Not even near to perfect and certainly nothing that begs for more.