Understanding what the gathering offers
Before choosing, read the described activities and who leads them. Ask whether the work is individual, paired or in a group, whether you need to bring a partner and whether partner changes are proposed. The event title alone does not answer these questions.
If the programme mentions intimacy or touch, ask what that means in this particular setting: which exercises are planned, what clothing is expected and which parts are optional. Do not infer the presence or absence of nudity from the word tantra alone.
Boundaries and choice
Clarify how boundaries are agreed before exercises, how to say no and how to stop an activity or take a break. Ask whom you can speak to during the gathering if anything is unclear. Attending the event does not mean consenting to every activity or any form of touch.
Also check the agreements on photography and keeping personal sharing confidential. Concrete answers can help you decide whether the format matches what you are looking for.