Angelo Carotenuto, the founder and co-owner of LivTours, a tour company operating out of Italy, Paris, and Barcelona, shared how rules are constantly changing.
Within 24 hours, the Academia Museum in Florence, Italy, changed its policy from allowing two tourists per group to groups of six people, he said.
"Things change on a constant basis," he told Insider. "A little bit of flexibility is what we're expecting clients."
Beyond adaptability, travelers should also recognize their experience might be slightly different during this time.
Franco Assorgi, who has given tours across Italy for more than 30 years, is currently taking tourists throughout Rome, Italy, with The Tour Guy tours. He'll take clients to iconic destinations, like the Vatican City or the Colosseum.
Before, crowds of people would file into the cramped spaces, and tourists were often allowed to explore without time constraints. But now, Assorgi says he rushes through a tour of the Colosseum as tourists only get 40 minutes inside.
Assorgi says he's also uses a tablet more to pull up pictures, maps, and historic documents to tell stories that he no longer has time to share inside the attraction.
But not all changes are bad; Assorgi said it's nice to tour places without crowds.