diff --git a/src/services/attendees/attendee-schema.ts b/src/services/attendees/attendee-schema.ts
index 70edc18..c9558c7 100644
--- a/src/services/attendees/attendee-schema.ts
+++ b/src/services/attendees/attendee-schema.ts
@@ -34,7 +34,9 @@ const AttendeeSchema = new mongoose.Schema({
     userId: { type: String, required: true, unique: true },
     name: { type: String, required: true },
     email: { type: String, required: true, unique: true },
-    events: [{ type: mongoose.Schema.Types.ObjectId, ref: "Event" }],
+    events: [
+        { type: mongoose.Schema.Types.ObjectId, ref: "Event", default: [] },
+    ],
     dietaryRestrictions: { type: [String], required: true },
     allergies: { type: [String], required: true },
     hasCheckedIn: { type: Boolean, default: false },
diff --git a/src/services/auth/auth-schema.ts b/src/services/auth/auth-schema.ts
index 4181313..0980814 100644
--- a/src/services/auth/auth-schema.ts
+++ b/src/services/auth/auth-schema.ts
@@ -6,7 +6,7 @@ export const RoleValidator = z.object({
     userId: z.coerce.string().regex(/user[0-9]*/),
     displayName: z.coerce.string(),
     email: z.coerce.string().email(),
-    roles: z.array(Role),
+    roles: z.array(Role).default([]),
 });
 
 export const AuthRoleChangeRequest = z.object({
diff --git a/src/services/events/events-schema.ts b/src/services/events/events-schema.ts
index 92ca48f..1b2f777 100644
--- a/src/services/events/events-schema.ts
+++ b/src/services/events/events-schema.ts
@@ -5,7 +5,7 @@ import { v4 as uuidv4 } from "uuid";
 export const EventType = z.enum(["A", "B", "C"]);
 
 export const publicEventValidator = z.object({
-    eventId: z.coerce.string(),
+    eventId: z.coerce.string().default(() => uuidv4()),
     name: z.string(),
     startTime: z.coerce.date(),
     endTime: z.coerce.date(),