diff --git a/camply/containers/gtc_api_responses.py b/camply/containers/goingtocamp.py
similarity index 81%
rename from camply/containers/gtc_api_responses.py
rename to camply/containers/goingtocamp.py
index e03649b9..12233245 100644
--- a/camply/containers/gtc_api_responses.py
+++ b/camply/containers/goingtocamp.py
@@ -40,9 +40,9 @@ class AvailabilityResponse(CamplyModel):
     mapLinkAvailabilities: Dict[str, Any] = {}
 
 
-class SearchFilter(CamplyModel):
+class ParamsBaseModel(CamplyModel):
     """
-    /api/availability/map: API Filter
+    API and Booking URL Params
     """
 
     mapId: int
@@ -51,9 +51,25 @@ class SearchFilter(CamplyModel):
     startDate: str
     endDate: str
     isReserving: bool
-    getDailyAvailability: bool
     partySize: int
-    numEquipment: int
+
+
+class SearchFilter(ParamsBaseModel):
+    """
+    /api/availability/map: API Filter
+    """
+
     equipmentCategoryId: Optional[int] = None
     filterData: List[Any] = []
     subEquipmentCategoryId: Optional[int] = None
+    numEquipment: int
+    getDailyAvailability: bool
+
+
+class BookingUrlParams(ParamsBaseModel):
+    """
+    Booking URL Params
+    """
+
+    equipmentId: Optional[int] = None
+    subEquipmentId: Optional[int] = None
diff --git a/camply/providers/going_to_camp/going_to_camp_provider.py b/camply/providers/going_to_camp/going_to_camp_provider.py
index a8d22ca2..3f6d96e7 100644
--- a/camply/providers/going_to_camp/going_to_camp_provider.py
+++ b/camply/providers/going_to_camp/going_to_camp_provider.py
@@ -15,8 +15,9 @@
 
 from camply.containers import AvailableResource, CampgroundFacility, RecreationArea
 from camply.containers.base_container import GoingToCampEquipment
-from camply.containers.gtc_api_responses import (
+from camply.containers.goingtocamp import (
     AvailabilityResponse,
+    BookingUrlParams,
     ResourceAvailabilityUnit,
     ResourceLocation,
     SearchFilter,
@@ -242,18 +243,24 @@ def get_reservation_link(
         if not sub_equipment_id:
             sub_equipment_id = ""
         url = f"https://{rec_area_domain_name}/create-booking/results"
-        query_params = {
-            "mapId": map_id,
-            "bookingCategoryId": 0,
-            "startDate": start_date.isoformat(),
-            "endDate": end_date.isoformat(),
-            "isReserving": True,
-            "equipmentId": equipment_id,
-            "subEquipmentId": sub_equipment_id,
-            "partySize": party_size,
-            "resourceLocationId": resource_location_id,
-        }
-        booking_url = url + "?" + urlencode(query_params)
+        if sub_equipment_id in (None, ""):
+            sub_equipment_id = NON_GROUP_EQUIPMENT
+        query_params = BookingUrlParams(
+            mapId=map_id,
+            bookingCategoryId=0,
+            startDate=start_date.isoformat(),
+            endDate=end_date.isoformat(),
+            isReserving=True,
+            equipmentId=equipment_id,
+            subEquipmentId=sub_equipment_id,
+            partySize=party_size,
+            resourceLocationId=resource_location_id,
+        )
+        booking_url = (
+            url
+            + "?"
+            + urlencode(query_params.dict(exclude_unset=True, exclude_none=True))
+        )
         return booking_url
 
     def find_facilities_per_recreation_area(