There are stricter entry requirements for US territories and overseas states. Even if you have been vaccinated in Hawaii, you will need to undergo a Covid-19 test. If you received your vaccine from outside Hawaii, your result will be negative. If you are not vaccinated, expect a mandatory 10-day quarantine on arrival. However, the testing requirement for travelers who have been vaccinated will be lifted for those who arrive after July 8. Under certain circumstances, travelers who have recently recovered from a Covid-19-related infection may also be exempt.Guam, Puerto Rico, American Samoa and the US Virgin Islands have their own entry screening requirements. Before you start planning your trip, take a look at the CDC guidelines for domestic travel.Are I Safe on the PlaneAh, the old flyin’ bus. Your risk of infection can be reduced by ensuring it has been at least two weeks since your last vaccination. Also, you should always wear a mask on the plane and in airports. The United States federal law currently requires that you wear a mask whenever you travel, both in airports or onboard an airplane. Here are some face mask suggestions.Commercial airplanes can have powerful air filtration systems which scrub and exchange the air inside the cabin twice or three times per second. This is a lot more than what you would find in your typical commercial building. All major US airlines now book middle seats. They used to close off these seats during the height of the pandemic in order to make space between passengers. Visit your airline's Covid-19 portal for more information on what to expect while flying.Instead of driving, Medea Giordano, WIRED's reviewer, has a guide for road-tripping during a pandemic. Amtrak is an alternative if driving takes too much time and you don't want to fly. It has been updating its trains to comply with Covid-19 precautions. If you wish to be completely separated from your fellow passengers, you can rent a private roomette.Can I travel if I am not vaccinated?It's not as easy to travel if you aren't vaccinated. You also have a greater chance of contracting Covid-19. While wearing a mask may reduce some of the risk, there isn't enough data to know how much.Vaccines are safe. They don't magnetize blood and don't contain any human fetal cells. WIRED is full of people who have had the jab. We've all had the three types of vaccines. We wouldn't recommend you do anything that we haven’t done. Side effects can be very rare, but WIRED senior correspondent Adam Rogers discusses them openly.Do I have to Quarantine?Almost certainly, if you aren't vaccinated. If they allow you to enter, that is. You might be released if you have a negative Covid-19 testing. You might not be released. You may be required to stay in a hotel for 10 to 14 days by some countries. You should check the rules for the country you are visiting. You may be quarantined by certain US territories, islands, or possessions. Remember that you will likely have to pay for it out of your own pocket. Often, bills can run to quadruple the amount of US dollars.So, Vaccine Passports? Let me know about those.The paper vaccination card that you got after you have received your shot(s), is the most important document right now. It's your most important document.A World Health Organization yellowcard, which is an official proof of vaccination document that is recognized internationally in many places, can be obtained. Although it is not necessary to have a WHO Yellow Card to travel, contrary to some rumors, one can be purchased from the US Government Bookstore for $25. Bring your blank yellow card to the vaccine provider. Ask them to include your vaccination information.