After the Easter vacation is before the summer vacation. This is what many Germans are currently thinking, who can hardly wait to finally take a break from their grueling pandemic everyday life. They would be only too happy to plan their summer vacation - away from discussions about lockdown and vaccination delays. The people in the Germans' favorite holiday destinations in southern Europe are also impatiently waiting for the end of the third wave of the pandemic so that the tourists can come. Because for many countries an important part of their economy depends on business with foreign visitors. And after the winter and Easter holidays have largely been canceled, hopes rest on the summer. But under what conditions could a Corona-safe summer vacation be successful this year?