Don’t spend your money! You do not need to go anywhere special to see the harvest moon at night.
The harvest moon is merely the full moon which is closest to the equinox in the autumn. The fall equinox comes around September 22, every year. So which ever full moon is closest either before or after that date will be the harvest moon. You will be able to see that moon anywhere on Earth except maybe near the poles. The next harvest moon will be September 24th, 2018. Look up that night. As long as there are no clouds, you’ll see it. It’s big.