Increased capacity once.Sounds like they increased capacity again and reopened previously sold out dates with more tickets?
The first time they started to sell out, they added more dates, and didn't add capacity.
The new increased capacity could be that they initially low-balled capacity due to decisions made over a month ago when they didn't know for sure what COVID restrictions would still be in place, or, if they had enough staff.
They could have internally added more attractions to be open than they had initially planned.
Or, they're not keeping low capacity. We'll see the first sold-out night what it's like.
Right now... no one knows for sure.