Honeylune Ridge

Walkthrough: You will arrive in Moon Kingdom at Honeylune Ridge, needing to reach the chapel on the far side of the Kingdom in order to stop the wedding. It won't be necessary to obtain any Power Moon or Purple Coins here, but there are plenty found throughout for the finding and taking. Begin by heading behind the Odyssey Airship to find a crater with a Power Moon overhead, using your Space Jumps in order to grab it. There is also a plateau nearby with a flower that can be used to climb up to find some Purple Coins.

After obtain those, head down the main path to the north, turning west to cross the spiky rock enemies you found back in Seaside Kingdom. Time you jumps to get past these foes, using your long jump afterward to reach the ridge on the far side. After you do, you will find a floating octopus that resembles the Boss you also faced back in Seaside Kingdom. Just like that fight, he will shoot spiked shells at you. Simply jump above his head and ground-pound to defeat him. Grab the Purple Coins nearby after you do, as well as the Power Moon hidden in the glowing rock within the other rocks found in the crater. Just up ahead will be even more rock enemies, as well a few pillars that can be long jumped through to obtain some Purple Coins.

Once down on the next plateau, Bowser's track will end at a very steep ridge with a great distance to the next platform. While there is a broken path down below, you can grab the Speed Boost Flowers to give Mario a running leap over the chasm to reach the next area. When you do reach the next platform, look to your right to find a flower under an octopus to obtain more Purple Coins. After you do, go left past the checkpoint to enter Moon Caverns.