diff --git a/app/client/ui/WelcomeQuestions.ts b/app/client/ui/WelcomeQuestions.ts
index 5db8c0a8..4adc17e9 100644
--- a/app/client/ui/WelcomeQuestions.ts
+++ b/app/client/ui/WelcomeQuestions.ts
@@ -5,10 +5,11 @@ import {IconName} from 'app/client/ui2018/IconList';
 import {ISaveModalOptions, saveModal} from 'app/client/ui2018/modals';
 import {BaseAPI} from 'app/common/BaseAPI';
 import {UserPrefs} from 'app/common/Prefs';
+import {getGristConfig} from 'app/common/urlUtils';
 import {dom, input, Observable, styled, subscribeElem} from 'grainjs';
 
 export function showWelcomeQuestions(userPrefsObs: Observable<UserPrefs>) {
-  if (!userPrefsObs.get()?.showNewUserQuestions) {
+  if (!(getGristConfig().survey && userPrefsObs.get()?.showNewUserQuestions)) {
     return null;
   }
 
diff --git a/app/common/gristUrls.ts b/app/common/gristUrls.ts
index 95490154..70421d04 100644
--- a/app/common/gristUrls.ts
+++ b/app/common/gristUrls.ts
@@ -479,6 +479,9 @@ export interface GristLoadConfig {
 
   // If custom widget list is available.
   enableWidgetRepository?: boolean;
+
+  // Whether there is somewhere for survey data to go.
+  survey?: boolean;
 }
 
 // Acceptable org subdomains are alphanumeric (hyphen also allowed) and of
diff --git a/app/server/lib/FlexServer.ts b/app/server/lib/FlexServer.ts
index 7d526d56..48735a1e 100644
--- a/app/server/lib/FlexServer.ts
+++ b/app/server/lib/FlexServer.ts
@@ -76,8 +76,9 @@ const HEALTH_CHECK_LOG_SHOW_FIRST_N = 10;
 // And we show every Nth health check:
 const HEALTH_CHECK_LOG_SHOW_EVERY_N = 100;
 
-// DocID of Grist doc to collect the Welcome questionnaire responses.
-const DOC_ID_NEW_USER_INFO = process.env.DOC_ID_NEW_USER_INFO || 'GristNewUserInfo';
+// DocID of Grist doc to collect the Welcome questionnaire responses, such
+// as "GristNewUserInfo".
+const DOC_ID_NEW_USER_INFO = process.env.DOC_ID_NEW_USER_INFO;
 
 export interface FlexServerOptions {
   dataDir?: string;
@@ -1593,6 +1594,8 @@ export class FlexServer implements GristServer {
 
   private async _recordNewUserInfo(row: object) {
     const urlId = DOC_ID_NEW_USER_INFO;
+    // If nowhere to record data, return immediately.
+    if (!urlId) { return; }
     let body: string|undefined;
     let permitKey: string|undefined;
     try {
diff --git a/app/server/lib/sendAppPage.ts b/app/server/lib/sendAppPage.ts
index 99a0b204..24d4b287 100644
--- a/app/server/lib/sendAppPage.ts
+++ b/app/server/lib/sendAppPage.ts
@@ -46,6 +46,7 @@ export function makeGristConfig(homeUrl: string|null, extra: Partial<GristLoadCo
     maxUploadSizeAttachment: (Number(process.env.GRIST_MAX_UPLOAD_ATTACHMENT_MB) * 1024 * 1024) || undefined,
     timestampMs: Date.now(),
     enableWidgetRepository: Boolean(process.env.GRIST_WIDGET_LIST_URL),
+    survey: Boolean(process.env.DOC_ID_NEW_USER_INFO),
     ...extra,
   };
 }