The final issue of Secret Wars (2015) has been delayed. I am reading via trade paperback/hardcover collected releases. Many of the tie-in stories are being released now in these collected releases. But I can't even start reading the main Secret Wars story until that final issue is released, which then allows Marvel to publish the collection. Since I'm going to have quite a few tie-in collections sitting around, I want to know if I can read them without having the early events of Secret Wars spoiled.
Do the Secret Wars tie-ins spoil the events in the main event book? (be sure to use spoiler tags in your answer if you're going to be super specific)