Europe is taking a big step toward a new normality as many countries open borders to fellow Europeans after three months of coronavirus lockdowns — but even though Europeans love their summer vacations, it’s not clear how many are ready to travel again. The European Union home affairs commissioner, Ylva Johansson, told member nations last week that they “should open up as soon as possible” and suggested Monday was a good date. Many countries are doing just that, allowing travel from the EU, Britain and the rest of Europe’s usually passport-free Schengen travel area, which includes non-EU countries like Switzerland.