diff --git a/src/components/admin/ApprovalTransactionToggle.tsx b/src/components/admin/ApprovalTransactionToggle.tsx
index 5c8c2e02..acbd8dac 100644
--- a/src/components/admin/ApprovalTransactionToggle.tsx
+++ b/src/components/admin/ApprovalTransactionToggle.tsx
@@ -11,11 +11,12 @@ import { Alert, AlertDescription } from '@/components/ui/alert';
  * - NEW: Atomic PostgreSQL transaction (true ACID guarantees)
  */
 export function ApprovalTransactionToggle() {
-  const [useRpcApproval, setUseRpcApproval] = useState(false);
+  const [useRpcApproval, setUseRpcApproval] = useState(true);
 
   useEffect(() => {
-    // Read feature flag from localStorage
-    const enabled = localStorage.getItem('use_rpc_approval') === 'true';
+    // NEW flow is default (100% rollout)
+    // Only disabled if explicitly set to 'false'
+    const enabled = localStorage.getItem('use_rpc_approval') !== 'false';
     setUseRpcApproval(enabled);
   }, []);
 
@@ -35,7 +36,7 @@ export function ApprovalTransactionToggle() {
           Approval Transaction Mode
         </CardTitle>
         <CardDescription>
-          Control which approval flow is used for moderation
+          Atomic Transaction RPC is now the default. Toggle OFF only for emergency rollback.
         </CardDescription>
       </CardHeader>
       <CardContent className="space-y-4">
@@ -56,10 +57,10 @@ export function ApprovalTransactionToggle() {
         </div>
 
         {useRpcApproval ? (
-          <Alert>
-            <CheckCircle2 className="h-4 w-4" />
+          <Alert className="border-green-500 bg-green-50 dark:bg-green-950">
+            <CheckCircle2 className="h-4 w-4 text-green-600" />
             <AlertDescription>
-              <strong>Atomic Transaction Mode Enabled</strong>
+              <strong className="text-green-600">Production Mode (100% Rollout) ✓</strong>
               <ul className="mt-2 space-y-1 text-sm">
                 <li>✅ True ACID transactions</li>
                 <li>✅ Automatic rollback on errors</li>
@@ -69,17 +70,17 @@ export function ApprovalTransactionToggle() {
             </AlertDescription>
           </Alert>
         ) : (
-          <Alert>
-            <AlertCircle className="h-4 w-4" />
+          <Alert className="border-orange-500 bg-orange-50 dark:bg-orange-950">
+            <AlertCircle className="h-4 w-4 text-orange-600" />
             <AlertDescription>
-              <strong>Legacy Mode Active</strong>
+              <strong className="text-orange-600">Emergency Rollback Mode Active ⚠️</strong>
               <ul className="mt-2 space-y-1 text-sm">
-                <li>⚠️ Manual rollback logic (error-prone)</li>
+                <li>⚠️ Using legacy manual rollback logic</li>
                 <li>⚠️ Risk of orphaned entities if edge function crashes</li>
                 <li>⚠️ No true atomicity guarantee</li>
               </ul>
-              <p className="mt-2 font-medium">
-                Consider enabling Atomic Transaction Mode for improved reliability.
+              <p className="mt-2 font-medium text-orange-600">
+                This mode should only be used temporarily if issues are detected with the atomic transaction flow.
               </p>
             </AlertDescription>
           </Alert>
diff --git a/src/lib/moderation/actions.ts b/src/lib/moderation/actions.ts
index fee9dcb4..a2574fad 100644
--- a/src/lib/moderation/actions.ts
+++ b/src/lib/moderation/actions.ts
@@ -178,9 +178,9 @@ export async function approvePhotoSubmission(
  * @returns Action result
  */
 /**
- * Feature flag to enable atomic transaction RPC approval flow.
- * Set to true to use the new process-selective-approval-v2 edge function
- * that wraps the entire approval in a single PostgreSQL transaction.
+ * Feature flag: Use new atomic transaction RPC for approvals (v2)
+ * 
+ * ✅ DEFAULT: NEW atomic transaction flow (100% ROLLOUT)
  * 
  * Benefits of v2:
  * - True atomic transactions (all-or-nothing)
@@ -188,11 +188,11 @@ export async function approvePhotoSubmission(
  * - Network-resilient (edge function crash = auto rollback)
  * - Eliminates orphaned entities
  * 
- * To enable: localStorage.setItem('use_rpc_approval', 'true')
- * To disable: localStorage.setItem('use_rpc_approval', 'false')
+ * To disable NEW flow (emergency rollback): localStorage.setItem('use_rpc_approval', 'false')
+ * To re-enable NEW flow: localStorage.removeItem('use_rpc_approval')
  */
 const USE_RPC_APPROVAL = typeof window !== 'undefined' && 
-  localStorage.getItem('use_rpc_approval') === 'true';
+  localStorage.getItem('use_rpc_approval') !== 'false';
 
 export async function approveSubmissionItems(
   supabase: SupabaseClient,