Other reviewers describe it as:A celebration is underway aboard the ship.
A fun victory lap for The Orville
If you didn't guess, Isaac and Claire and get hitched. The episode begins with Bortus and Klyden renewing their marraige vows, in a perculiarly Moclan way, which is the catalyst for Isaac to propose to Claire The Wedding preparations produce several humorous exchanges - Isaac getting terrible advice from John LaMaar, Bortus hijacking the best man duties from Malloy, and Issac inviting the entire Kaylon Homeworld to the reception.The Orville wrapped up the Season in an emotional yet funny episode, much like the show in general.
The secondary story concerns Lysella from the first season story "Majority Rule" who requests asylum aboard the Orville, changes her mind when she feels overwhelmed by the technological advances, then attempts to steal items and take them back to her home planet of Sargus 4. Grayson takes Lysella to the simulator to show her Gendal 3, an industrialized planet not unlike Sargus 4, and therefore not unlike our own 21st Century Earth. She advances the simulator five years into the future where the planet is desolate, with mutated Gendalians, She explains that this is what can happen when a culture is given tools without earning them, or without developing the responsibility to use them.
If the series doesn't get reviewed by Hulu parent company Disney then this was a good place to end it. Everything is neatly tied off. Even Alara returns as a Wedding guest. However, Ensign Charly Burke is never mentioned.
However, if it does get renewed they will have to stop the Orville from becoming the "Love Boat" with Ed and Kelly, Bortus and Klyden, Claire and Issac, and very likely Lysella and John too.