feat: add ticket registration FAQ to speaker guide

Author: JoshuaKGoldberg

src/pages/articles/speaker-guide.astro

@@ -273,6 +273,10 @@ const title = "Speaker Guide";
 							"Do I need to bring my own laptop?",
 							"No, we'll have a dedicated stage speaker laptop with a clicker. Send us your slides ahead of time.",
 						],
+						[
+							"Do I need to register my ticket?",
+							"No need, you're in the system. Any +1 you want to bring will need to register, though. Ask in your hotline channel for an invite code to get them in for free.",
+						],
 						[
 							"How do I get to and from the airport?",
 							"We'll have a volunteer drive you to and from the airport. Please let us know your flight details as soon as you know them; we'll coordinate with you.",