To add to this, I too have read elsewhere (and I believe confirmed by the park) that things are supposed to be much more substantial with the fountain by Memorial Day, in terms of water flow, patterns, colors, synched to music, etc. It isn't fully completed yet, but they opted to have them at least on for opening day. But it sounds like much more is to come.
In regards to the beer stein, it isn't new but they did rehab it in the off season!
https://www.visitkingsisland.com/blog/2019/april/international-street-stein-refurbished-for-2019-season
The park is looking great! It's been a few years since I have made it, I might be due for a trip.