No, only one form of TourRadar savings can be applied to each booking, whether that is travel credits, a promo code, or Member Savings. This means that you can choose to use either the TourRadar Members Savings OR a promo code OR your earned travel credits. These cannot be combined.
If there is a form of savings already applied to the adventure, we often suggest saving your travel credits, as this will result in great savings on your new adventure and any travel credits earned from this adventure will be added to your bank of credits for more savings on your future bookings!