Yes, on the 24th, we actually had 4 of us on different accounts booking for our large party for 4 park days. Good thing we did. My Discover Card got flagged as fraud and didn't go through. My son had a Disney Visa on his and it went through fine. He ended up booking the things I was supposed to book. My husband was trying with a Marriott Visa on his account and it errored the first time, but he was eventually able to book after closing out the app and trying again. My daughter had a Freedom Visa and hers went through. Very frustrating

Disney gift cards would probably be the safest option to make sure your credit card doesn't balk for fraud. Also, make sure everyone on your group is properly linked. My niece had two accounts for some reason: one connected to the park ticket and one to the hotel ressie. (They should have been merged, but weren't). She was showing as not eligible to book because her hotel wasn't attached to the account I was linked to. We just left her off the LLMP and had to call IT afterward to get her accounts merged and book her LLMPs which were not with the rest of our group, but most were overlapping. Total pain in the butt.