Guest Travel Writer PLG, Brooklyn NY: There may be disputes among delis and their patrons from Tel Aviv to Beverly Hills. However, no one can question the sheer joy of biting into this classic Katz’s sandwich.

The Katz’s hot pastrami on rye is piled high with succulent meat, and typically served with a kosher pickle and a bottle of Dr. Brown's Root Beer. The price just before the turn of the 20th century for this serving was 15 cents, plus a nickel tip for the waiter. Today, it costs at least $25, plus a much heartier tip.

However, even a certified chow hound could have trouble finishing more than half of the huge sandwich, and the waiter will wrap the other half for doggy bagging. Of course, when you get home, your dog will only get a tempting whiff of it.

The basic guidelines for tipping in Las Vegas and other gambling meccas aren't that much different from those in your home town. Tips are expected in casinos, restaurants, hotels, parking lots, bars and other sites.

In Las Vegas as elsewhere, service people depend on tips as a significant part of their income. It encourages them to do everything possible to earn your money. The old adage is that T.I.P. stands for To Insure Promptness, the norm in Sin City.

Tipping begins as you arrive. If you're flying in with luggage, and a baggage handler helps you, tip $1 a bag. After riding a taxi, limo or van to your hotel, tip from 10 to 20 percent of the fare.

The ten-centuries-old cathedral chapel has been the site of royal weddings, funerals, coronations and other official British events. It is also the last resting place of famed kings, queens, authors, composers, artists and military leaders. Your travel4seniors.com editor captured the magnificent chapel scene from high above in the choir loft.

While even the latest jet passenger aircraft haven’t yet hit 600 miles an hour, Hyperloop Transportation Technologies claim their super-fast, air pressure tube trains will do much better. Experiments are now being conducted in the Nevada desert area near Las Vegas.

Imagine boarding a train in downtown Los Angeles and stepping off in downtown San Francisco only a half-hour later! Today we spend more time than that just looking for a parking spot in the airport garage.