We have not been to any 4 game DA events. All the official showcases are 3 games in 4 days. It’s about the kids not the parents. In fact parents don’t even need to go since our club travels and stays together as a team. If you are worried about parent inconvenience and want your 4 game in two day events (which I think is not good for the kids) play at a lower level. My kid had no issue with excelling in school while missing a few days.
That's great that your team doesn't go to these tournaments, but just because you haven't been doesn't mean they don't exist. All the tournaments that accept DA clubs (Manchester City, Surf, Galaxy Cup...) work this way.
But you've missed the point. I'm not complaining about the DA system. I'm just letting people know that there is a tradeoff.