I headcanon that Wales would probably invite New Zealand even though she never gets invites.
England and Scotland would probably be the one who usually invites Wales and is already used to him inviting that... Sheep. Though, they're still annoyed by it, can't even have a trio talk without that sheep being there!
United States President Lyndon B. Johnson owned an Amphibious car, the Amphicar, and used it to scare guests by driving them into his lake screaming about brake failure.