Purchasing directly from Klook is very convenient and reasonably priced. You can buy and use tickets instantly, saving you the time of queuing at the counter upon arrival. Simply present the QR code at the ticket gate. If you purchase multiple tickets, Klook will provide separate QR codes, allowing each person to scan their own for entry. Before entering, you'll go through a security check, so remember not to bring any weapon-like items. Once inside, you can borrow an audio guide device for free on the ship and return it at the exit without needing to deposit any identification. The USS Midway Museum is very large; you could easily spend three to four hours exploring and taking photos. The upper deck displays fighter jets, and you can also enjoy views of San Diego Bay. The lower deck allows you to visit the crew's living quarters, such as the engine room, mess hall, and galley, which is very helpful for understanding life on board. The overall experience is very interesting, and I highly recommend visiting if you're in San Diego.