| | | In case you missed it: Travel companies are using AI for perks and pricing, we tested European budget airlines and here’s how to ask for help with midair personal space. Frugal flying | (Natalie Compton/The Washington Post) | Does Europe have a best budget airline? We tried 3. Our reporter tested cheap flights on EasyJet, Ryanair and Wizz Air. Midair minefield | (Washington Post illustration; iStock) | Someone is sleeping on you. Can you ask a flight attendant to step in? Flights are fraught with personal space infractions. Here’s when it’s okay to request a referee. Travel tech | (Danielle Del Plato/For The Washington Post) | Who gets cheap flights and hotel upgrades? AI will decide. Delta, Marriott and Hertz are among the many large companies adopting artificial intelligence to change the way we take trips. Frequent travelers are wary. Big bonds | (Yuri Gripas/Pool/EPA/Shutterstock) | U.S. will charge some foreign travelers $15,000 deposits The State Department will require Malawian and Zambian travelers to front big bucks as an assurance that they won’t overstay. More nationalities could be added. From the archives | (Illustration by María Alconada Brooks/The Washington Post) | Why do you get so hungry at the beach? Experts say lounging by the coast can make us reach for our sandy snacks. Destinations | (Photo by Denise Truscello/Getty Images for Fontainebleau Las Vegas) | This summer, Tom Brady and sportscaster Jim Gray teamed up to debut the Hall of Excellence, a sports memorabilia museum inside the Fontainebleau Resort and Casino in Las Vegas. The idea began eight years ago, when Brady and Gray wondered what to do with their overwhelming collections. They called in favors, dug through storage and rallied a few famous friends to help create one of the most impressive semiprivate sports collections ever assembled. Read more about Sin City’s new sparkling attraction. On Instagram | (Natalie Compton/The Washington Post) | Behold, Amtrak’s new fleet of NextGen Acela trains. Amtrak announced today that these high-speed, premium trains will start running between Washington, D.C., New York and Boston on Aug. 28. They’ll have features like more seats per train, individual USB ports, reading lights and “an enhanced on-board dining experience.” No word on pricing yet, but we hope that more trains means more affordable fares for travelers. | Want this newsletter every week? Sign up here. | | | | | |