Skip it
The act of drinking NA beer could be a trigger to a relapse. NA beer actually has .5% alcohol, so it is not completely NA... Besides... it tastes TERRIBLE!
If you like carbonated drinks, try Crystal Geyser Juice Squeeze. It comes in several flavors and is sweetened only with fruit juice. It is available at Trader Joe's and many supermarkets.
STAY DETERMINED and have fun on your trip.