1. When researching your destination, research the LGBT community too.
Take some time to check out a few (legitimate, reliable) articles on how the LGBT community in your destination is treated. What sort of issues does the local LGBT community face? Are there laws against homosexuality? Is gay marriage allowed? Are there aspects of local cultures that challenge the gender binary, such as the hijra community of India? And read about campaigns, activism, and projects in the area that have affected the community.
Education can be the first defense against oppression. By educating yourself before visiting, you can ensure you’re a better ally once you arrive.