Update: the reward track has since changed. It no longer runs on fixed points milestones — rewards now rotate on a 7-day cycle. See the Pre-registration page for how it works now.
Pre-registration rewards arrive on a rolling weekly cycle rather than all at once.
The track
Every 7 days a new list of rewards appears for you to claim. Claimed items go straight into your inventory and stay there, and once you have early access you'll be able to claim them in game. Each new list replaces the last, so anything you leave unclaimed is gone.
How to earn points
Daily egg nurturing, Discord and Twitter quests, referring friends, the free mint, and early FLOWER deposits all contribute.
Full reward track is on the Early Access page.