No, since Chris and Risa will be flying back to their home in Kyoto after the wedding, they cannot accept physical gifts. Cash, digital gifts, or gifts smaller than a postcard are appreciated
There is no formal rehearsal dinner, but there will be a barbecue the night before the wedding at an AirBnB by the Dream Inn. The wedding party will be briefed on the ceremony there. All guests who arrive on the 2nd welcome; it is not limited to the wedding party.