Creating an account at Wikivoyage gives a bunch of benefits:

• Easier communication — you will receive others' comments on your personal talk page, even if your future visits are from a computer or device at another IP address.
• Gain credit for your contributions.
• Build a reputation — allow other Wikivoyagers to distinguish you from other anonymous users, and provide you with a greater level of trust.
• Protect your privacy — your IP address will be displayed in the history of articles if you are not editing from a registered account, but registering will allow you to maintain your privacy behind an alias (this will also hide your location).
• Have your own watchlist — a list of pages for which you want to keep track of future changes.
• Customize your Wikivoyage experience with the preferences menu.
• Make your own books, a collection of Wikivoyage articles you can save in PDF, or buy a copy of from PediaPress.
• Be able to edit semi-protected pages (after four days of registering).
• Have the opportunity to gain additional user rights, such as having your edits automatically patrolled, or becoming one of the drone underclass.
• Have a better time here - get recognised and be taken more seriously.
• Link edits to your account on other Wikimedia projects (if you have one).