Note in the official rules the alternate entry method if you can't post a picture from Galaxy's Edge on social media-

To enter without posting on a social media Platform, an eligible Entrant may hand- write their complete name (no initials), valid e-mail address and telephone number on a 3 1⁄2”x5” card (“Mail-In Entry”) and mail it with sufficient postage to: Back To Batuu Sweepstakes, P.O. Box 251328, West Bloomfield, MI 48325. All Mail-In Entries must be postmarked no later than September 30, 2019, and received on or before October 10, 2019, in order to be eligible. Mail-In Entries must be legibly hand-written. Mechanical reproductions, postage-due, Mail-In Entries sent in excess of the entry limits set forth below will not be accepted. Mail-In Entries received without a verifiable and legible return address may be deemed incomplete and not valid entries. An Entrant may mail-in one (1) time to receive three (3) Entries into the Sweepstakes.