If you're asking if Hagrid's coaster will be "unofficially" open by then, it's a big question mark. Even if it is the period of the soft open, you'll be waiting for hours just for a chance to potentially get on it.
During those periods ride attendants never tell you when, or if it will ever open that day, but that you can wait to see if it does. From there you get to wait until it may, or may not open for that day. When it does open, it will operate very intermittently (especially in the beginning of soft openings) due to the testing process and the break downs.
I typically do not recommend people to wait for soft openings unless they're staying at the parks for more than a couple of days (so they still have time to enjoy the parks), or if they have less, they're massive fans and accept they will be waiting for hours and hours for something that may, or may not happen.
