I came across the above expression "I hope I enjoy myself very much." when I was reading something and the writer wasn't native English speaker. She was talking about visiting a place she wanted to go, but I'm not sure if this is correct grammatically. I'm not sure what could be wrong, but it doesn't feel right. I would appreciate very much if you could tell me what kind of error this is, if it is, and how I can change the expression to make it right.

I hope I enjoy myself very much

I came across the above expression when I was reading something, the writer wasn't a native English speaker. She was talking about visiting a place she wanted to go, but I'm not sure if the sentence is grammatically correct. 

I'm not sure what is wrong, but it doesn't feel right.

I would appreciate very much if you could tell me what kind of error this is, if it is, and how I can change the expression to make it right.