Presale Questions?

I noticed on Ticketmaster that only some shows have presales. Are they all going to have one? If so, I haven't received a password yet and I am getting nervous. I am looking to get tickets to New Jersey, New York, or Mohegan Sun. Can someone email me info or PM me? my email is kerrybee999@aol.com I would appreciate it greatly. I am really trying to get the Mohegan tickets. My sis and I plan on leaving our kids and husbands home and go away by ourselves for the weekend. How nice would that be?? lol. Thanks guys!!!

Kerry