Vernon Dursley hated magic in every form so no, he wasn't jealous. Petunia was jealous of her sister for being a witch so it is likely she is jealous that her nephew was too. As for Dudley, it is hard to say.
Yes, in the last book, Harry Potter and the Deathly Hallows Harry is saying good-bye to the Dursleys forever and Dudley tells Harry that he doesn't think he is a waste of space.
Harry was expecting a better summer vacation, because he was spending it mostly away from the Dursleys for the first time ever.
For me it's Harry Potter and the prisoner of azkaban.
It was not mentioned in the series that Harry Potter was eating Jambalaya.
Yes . Harry potter and the deathly hollows
given that harry potter is a fictional character, i doubt it
Yes, he did in Harry Potter and the Goblet of Fire.
Sadly no Harry Potter MMORPG has been anounced. It is unlikley there will ever be one.
No he won't.
Harry Potter
No, Protego is.
No.