In the NSO version, you can collect a maximum of 69 Shine Sprites (currently) before Peach is kidnapped
Using sequence breaks and wall clips, I managed to collect 69 Shines before Pinna Park.
First I did Pianta Village, using Yoshi skip in Episode 5 to get all 11 Shines in the level, and 27 Blue Coins, missing only the coins that require Yoshi.
Then I did the clip into Sirena Beach during the Shadow Mario chase, and using the Banana skip in Episode 3 allowed me to 100% the level with all 11 Shines and 30 Blue Coins.
Then I did Bianco Hills as normal, collecting all 11 Shines and 28 Blue Coins, missing only the two coins that require Yoshi.
Then I did some cleanup in Delfino Plaza, using various fruit clips and tricks to get all but 3 Blue Coins, and two Shines that require Rocket Nozzle (east Bell Tower and Shine Gate)
From then, I could only pick either Ricco Harbor or Gelato Beach, since getting even a single Shine from both levels will trigger the kidnapping.
I picked Ricco Harbor since it would allow me to cash in the Blue Coins I'd been collecting. In Ricco I got 10 Shines and 29 Blue Coins. Unfortunately, it seems like Rocket Storage was patched in NSO, so I'm unable to get the Episode 8 Shine without Yoshi.
After cashing in all my Blue Coins, I had enough to claim an extra 13 Shine Sprites, which was more than enough to clear up the darkness around Delfino Plaza, and also Peach hasn't been kidnapped yet.
If I even save the lighthouse, the next time Delfino Plaza reloads, Peach will be kidnapped. It's funny to run around a completely brightened Delfino Plaza and still having NPCs complain about the weather.
I'd love to hear ideas to get more Shines or Blue Coins without triggering Pinna, 70 would be possible if Rocket Storage weren't patched in the NSO version. The 3 Blue Coins I'm missing in Delfino Plaza are the Turbo Nozzle doors near the lighthouse, and the yellow goop spots that only Yoshi can spray.