My Dad got it 12/22 at Epcot. He became symptomatic on 12/25. We got it from him. We had gone to Disney Springs on 12/20 and were masked / unmasked the same; in less crowded environments than in Epcot and inside indoor locations for shorter times. Otherwise we were at home between then and 12/22. Although, we did go to the grocery store. BA.1's incubation is about 3 days.
Since DH and I didn't get it at the same time he did, the two places, specifically, we thought he got it were in the 30 minute indoor queue at Living with the Land, which we refer to as virus entrapment zone. We had KN94s, he had surgical. Or in the tightly packed, hour long outdoor queue at Spaceship Earth. He was unmasked, we were.
So it's either longer incubation time (5 days to have gotten it at Disney Springs), shorter exposure (a quick trip to the grocery store) or Epcot (fits the window).