diff --git a/apps/activity/templates/activity/activity_detail.html b/apps/activity/templates/activity/activity_detail.html
index 1a8d01ee..bb0fc57a 100644
--- a/apps/activity/templates/activity/activity_detail.html
+++ b/apps/activity/templates/activity/activity_detail.html
@@ -37,6 +37,11 @@ SPDX-License-Identifier: GPL-3.0-or-later
     <div id="guests_table">
         {% render_table guests %}
     </div>
+    <div class="card-footer text-center">
+        <button class="btn btn-block btn-primary mb-3" onclick="window.location.href='?_export=1&table=guests'">
+            {% trans "Export to CSV" %}
+        </button>
+    </div>
 </div>
 {% endif %}
 {% endblock %}
diff --git a/apps/activity/views.py b/apps/activity/views.py
index 9ef0d4f2..7829a2ee 100644
--- a/apps/activity/views.py
+++ b/apps/activity/views.py
@@ -136,12 +136,19 @@ class ActivityDetailView(ProtectQuerysetMixin, LoginRequiredMixin, MultiTableMix
     model = Activity
     context_object_name = "activity"
     extra_context = {"title": _("Activity detail")}
+    export_formats = ["csv"]
 
     tables = [
-        lambda data: GuestTable(data, prefix="guests-"),
-        lambda data: OpenerTable(data, prefix="opener-"),
+        GuestTable,
+        OpenerTable,
     ]
 
+    def get_tables(self):
+        tables = super().get_tables()
+        tables[0].prefix = "guests"
+        tables[1].prefix = "opener"
+        return tables
+
     def get_tables_data(self):
         return [
             Guest.objects.filter(activity=self.object)
@@ -150,6 +157,51 @@ class ActivityDetailView(ProtectQuerysetMixin, LoginRequiredMixin, MultiTableMix
                               .filter(PermissionBackend.filter_queryset(self.request, Opener, "view")),
         ]
 
+    def render_to_response(self, context, **response_kwargs):
+        """
+        Gère l'export CSV manuel pour MultiTableMixin.
+        """
+        if "_export" in self.request.GET:
+            import tablib
+            table_name = self.request.GET.get("table")
+            if table_name:
+                tables = self.get_tables()
+                data_list = self.get_tables_data()
+
+                for t, d in zip(tables, data_list):
+                    if t.prefix == table_name:
+                        # Préparer le CSV
+                        dataset = tablib.Dataset()
+                        columns = list(t.base_columns)  # noms des colonnes
+                        dataset.headers = columns
+
+                        for row in d:
+                            values = []
+                            for col in columns:
+                                try:
+                                    val = getattr(row, col, "")
+                                    # Gestion spéciale pour la colonne 'entry'
+                                    if col == "entry":
+                                        if getattr(row, "has_entry", False):
+                                            val = timezone.localtime(row.entry.time).strftime("%Y-%m-%d %H:%M:%S")
+                                        else:
+                                            val = ""
+                                    values.append(str(val) if val is not None else "")
+                                except Exception:  # RelatedObjectDoesNotExist ou autre
+                                    values.append("")
+                            dataset.append(values)
+
+                        csv_bytes = dataset.export("csv")
+                        if isinstance(csv_bytes, str):
+                            csv_bytes = csv_bytes.encode("utf-8")
+
+                        response = HttpResponse(csv_bytes, content_type="text/csv")
+                        response["Content-Disposition"] = f'attachment; filename="{table_name}.csv"'
+                        return response
+
+        # Sinon rendu normal
+        return super().render_to_response(context, **response_kwargs)
+
     def get_context_data(self, **kwargs):
         context = super().get_context_data()
 
diff --git a/apps/permission/fixtures/initial.json b/apps/permission/fixtures/initial.json
index 7946e66d..58bfd264 100644
--- a/apps/permission/fixtures/initial.json
+++ b/apps/permission/fixtures/initial.json
@@ -5201,6 +5201,7 @@
             "permissions": [
                 37,
                 41,
+                42,
                 53,
                 54,
                 55,