For safe and friendly meetups keep in mind the following:
Request a review
Request a review before you meet up with someone off Bunz and make sure your review request is accepted. For more information on the review process go here.
Meet in public
Choose a public location where everyone will feel safe. See this list of safe trading zones where Bunz has partnered with local cafes and stores to provide safe places to meet!
Look at past reviews and the number of posts someone has made to make sure you are comfortable meeting up.
Clear communication for when you're leaving and again when you're nearby go a long way. Alternatively make it known in advance if you have to reschedule or if you're going to be late. This is courteous and much preferred to ghosting or a last minute cancellation.