Just tried a >10k XP match.
No newer stage unlocked.
So you not only will not have previous progression saved. But also unable to fast forward to complete all other day’s stages.
That literally means, you have to login, and play multiple matches EACH DAY, and get >10k XP to reach the “saving point”. To get the reward.
Though if you only want to get the main reward, you can “take 6 days off” from the game.
I really hate “marathon” or similar ways of literally forcing player to be active everyday without major new contents. All of this is for DAU and other kinds of statistic.
When special events arent special anymore, as they almost keep happening very frequent and constantly. It’s no longer interesting anymore.
Save your player from getting bored by marathon. Save player’s interest for the major event/updates.
Also, consider other ways to save Pacific campaign… I know you are heavily guiding players to play it by tons of events. But events wont last long.