Europe's reopening won't be a repeat of the chaotic free-for-all in March when panicked, unco-ordinated border closures caused traffic jams that stretched for kilometres.
Still, it's a complicated, shifting patchwork of different rules. And although tourist regions are desperately counting on them, a lot of Europeans may decide to stay close to home this summer.
Hard-hit Spain, which on Sunday moved forward its opening to European travellers by 10 days to June 21, is allowing thousands of Germans to fly to its Balearic Islands for a trial run starting Monday — waiving its 14-day quarantine for the group.
"This pilot program will help us learn a lot for what lies ahead in the coming months," Prime Minister Pedro Sanchez said. "We want our country, which is already known as a world-class tourist destination, to be recognized as also a secure destination."
