No, 4K resolution is not only available for YouTube premium members. YouTube offers 4K resolution videos to all users, both free and premium. However, the ability to stream videos in 4K resolution may depend on the device being used and the internet connection speed. Some older devices or slower internet connections may not support 4K streaming. **

Traveling with only carry-on luggage requires careful planning and packing. Start by choosing a versatile wardrobe with items that can be mixed and matched. Roll your clothes to save space and use packing cubes to keep everything organized. Choose travel-sized toiletries and consider wearing your bulkiest items, such as a jacket or boots, on the plane to save space in your bag. Finally, be mindful of airline restrictions on liquids and pack accordingly to ensure a smooth security check. **

It ultimately depends on the length and nature of your trip. If you are traveling for a short period and want to avoid checking in luggage, a carry-on may be more convenient. However, if you are going on a longer trip or need to pack more items, a suitcase may be a better option to accommodate your belongings. Consider the size restrictions of airlines and your personal preferences when deciding between a suitcase or carry-on luggage. **

No, pocket knives are not allowed in carry-on luggage. According to TSA regulations, any type of knife, including pocket knives, are prohibited in carry-on bags. However, pocket knives are allowed in checked luggage as long as they are properly secured and declared to the airline. It's important to always check the current TSA guidelines before packing to ensure compliance with regulations. **

No, Expedia does not only sell flights with included carry-on luggage. When booking a flight through Expedia, travelers have the option to select different fare types that may or may not include carry-on luggage. Some airlines offer basic economy fares that do not include carry-on luggage, while others include it in their standard fare. It is important for travelers to carefully read the fare details and restrictions before booking to understand what is included. **

Most airlines allow passengers to bring one carry-on suitcase and one personal item, such as a purse or laptop bag. However, it's important to check with your specific airline as their policies may vary. If you are only allowed one carry-on suitcase, you may need to pack strategically to ensure you have everything you need for your trip. **

No, you can check in online regardless of whether you have carry-on luggage or checked luggage. Online check-in allows you to select your seat, provide any necessary travel information, and print your boarding pass before arriving at the airport. Whether you have carry-on luggage or checked luggage, you can still take advantage of the convenience of online check-in. **

Yes, carry-on luggage is allowed on Flixbus. Passengers are allowed to bring one piece of carry-on luggage with them on the bus, which should be stored in the overhead compartment or under the seat. It is important to note that the carry-on luggage should not exceed the maximum dimensions and weight restrictions set by Flixbus to ensure a comfortable and safe journey for all passengers. **