If you want to attend the conference in person and travel to Kiel you can book the upgrade here.
Please inform yourself carefully in advance regarding possible entry restrictions or quarantine regulations due to the pandemic.
General rules are here: Handout from the Ministry of Health.
Risk areas are currently officially designated here, from which entry is more difficult: Link to RKI.
If it turns out after booking that the journey is not possible due to the pandemic, we will refund the amount for the upgrade.