John C. (@Mr_Celi) tweeted: Do I need a passport to go from New Jersey to Puerto Rico and Back?

Peter replied: No, you don’t need a passport to go to Puerto Rico, but you do need a passport to continue to follow me on twitter. A passport gives you the option to see the world anytime you want to go. So you might not need that passport for your trip to Puerto Rico, but if you were there and wanted to take a day trip to one of the British Virgin Islands, which is only a 20-minute flight away, you couldn’t.

What upsets me most is that only about 35 percent of Americans have a passport. Consider this, a passport is about a $10 investment per year because they last for 10 years. Does that seal the deal? Get a passport.

For more information, watch Peter’s video on Passport Tips that You Should Know.

Barbara from Seattle emailed: My husband and I are thinking of taking a trip to Europe. We’re thinking of starting in Brussels and heading to Italy. Is that a wise first time trip, where should we fly into?

Peter suggested: Why don’t you fly into Brussels, then here’s the cool part: take the train. Get yourself a one, two or three week Eurail pass and use Brussels as your hub. You don’t have to end the trip in Brussels, you can end the train trip where you want to fly home from. To do that, you end up buying an open-jaw plane ticket. Fly Seattle to Brussels, and then depart from Paris or Italy or Spain back to Seattle. You’ll take the train and see the countries the way they’re meant to be seen and you’ll have a really great time.

For a different look at travel between European countries, check out Planes Vs. Trains in Europe.

@GoldMarieBerlin tweeted: Would you ever stay at a hostel? 

If you had asked me that question 20 years ago I’d say yes, I’d stay at a hostel if you held me at gunpoint. Today, the whole hostel experience has changed dramatically. They’re basically full- scale, full-service operations. It’s not just a cot with a graham cracker in a cold room.

There are some really great hostel deals all around the world. In Stockholm, there’s a great hostel that was actually a prison built in 1840. There are castles which are now hostels, in England and Ireland. Theres an unbelievable hostel in a cave in Capadoccia, Turkey.

The answer is yes, I would stay in a hostel today because they’ve figured it out.

For more hostel ideas, keep reading with 16 Unusual Hostels Worldwide.

By Peter Greenberg for Peter Greenberg Worldwide