For the awards thing on Feb 4th you need a ticket to get in, but they are free of charge. You can collect them (max 2 per person) at the box office/information desk in De Doelen.
Can't find any info about the performance on the 31st yet, except this:
21:00 IFFR Live Muziek: Lee Ranaldo & Leah Singer - Sight Unseen
It says more info will be on the site soon.
Is Sight Unseen a new show? I wonder how much different it will be to Drift.