Already, external events cloud the year’s outlook for summer travel big time, and the year is not even half over. My crystal ball is not hi-def, and I’m not about to make any dramatic prognostications. But a few developments appear to be extremely likely — and likely to hit your travel plans. COVID. “COVID is over” seems to be the current mantra of most of the world. In the U.S. and most other places, “Live with it” is replacing “eliminate it” as the COVID goal: • Mandatory mask requirements are being removed around the U.S. and around the world. But masks are still required on most commercial flights and by many private venues. • Mandatory vaccination or proof of recovery are also easing throughout the U.S. and in much of the rest of the world. • Currently only a handful of destinations still require arrival testing and possible quarantine. All …