Let me use your cadaver as a prop.
Impressions:
Far be it from me to pass judgement on weird tanuki alien wedding traditions, but I feel like parading around an ancestor’s corpse while decorations constantly explode from its coffin is probably in somewhat bad taste. As is doing magic tricks on a corpse. You could’ve actually cut the body in half, you know. The whole trick is that you don’t harm the person in the box, but there’s no issue there if they’re already dead. How would you even tell if they weren’t cut anyway?
Even the wedding ceremony itself was pretty bland though. It’s the same humor this show has been relying on since the second episode. Look at these crazy aliens and their crazy alien costumes or mannerisms. Aren’t they different? And… that’s it. The punchline is “Hey, look at how weird this stuff is.” Thankfully they had the wisdom to use aliens instead of other cultures, or this would have ended up racist as hell. At the start, it kind of worked juxtaposed against the backdrop of a group of clueless robots trying to attend to them in a ruined civilization, but we passed that at least six episodes ago and have been doing bad tanuki slapstick for at least six episodes straight. The original premise is very solidly left behind, and about the only thing I find interesting in this show any more is when the animators get completely let off the leash, which this episode had zero of.