It you use 02 only at night, you should be able to get along with a concentrator and the hoses attached, but no other equipment. You can take your own concentrator with you if you're driving, and that is probably the easiest thing to do. If you're flying, make an arrangement with your DME to have a concentrator delivered to your destination or destinations. That's part of their responsibility. Talk with your DME about how to do that and be sure you leave plenty of time for arrangements to be made. Nationwide companies like Lincare are often easiest to deal with because it's all internal.