in a recent French trip I asked the president of the aero club of the previous airfield visited to call ahead (everyone v friendly). In each case he could never get through but left a message.. the local members briefed me and said they go all the time and to just blame them... never needed to.. have landed, been respectful and had nothing but a warm welcome.. recent landing in Avaranches said they wanted more visitors despite the plate saying local aircraft only..
Forgiveness is always easier to obtain than permission.. especially if courteous and careful not to overfly locals etc