If your guests receive tickets with the wrong starting point, it's usually down to where the location is set. Here's how to fix it:
Go to Experiences → Locations, find the location and click Edit. The Address field in the "Edit location" panel is the address shown on the ticket and in the confirmation email — not an address written in the experience description itself. (On the experience/event itself there is only a Location dropdown for picking one of your saved locations.)
Correct the address here and save.
Tickets that have already been sent are not updated automatically. To give guests with existing tickets the correct meeting point, you can add the information via "Additional booking information" on the Settings tab — this opens a panel with a rich-text box where you enter the details and click Save. Then open the booking-information panel on the booking page and click Resend (next to the ticket/Payment link area) — the button only appears once the panel is open.
Still seeing the wrong location after the fix? Send us a screenshot and we'll help you.