Now that I have seen the ending, I will provide an account of my tale. I got the last blue coin by spraying the sign in Pianta Village. Then, I headed over to Corona Mountain and fought Bowser. Then there was the ending. It was the same usual ending. "Where are the secrets?" I thought. Then, instead of that picture of II Piantissimo at the end, it showed pictures of everyone standing in the casino of Hotel Delfino. Then... it ended. Nothing else. Everything is exactly the same. No secrets, no extra levels, nothing. I didn't find anything. Boy, this makes me mad!