there are pretty lots of buses running between these two places. for express bus, cost USD1 and it runs along the Marine drive (schedule: every two hours). for buses to Tumon Bay hotel street, cost USD2 (schedule: about every 30mins).
IF YOU ARE IN THE WEST COAST OF THE U.S.A FLY FROM SEATTLE TO HAWAII THEN TO GUAM OR FROM LAX TO HAWAII THEN TO
GUAM, IF YOU ARE IN THE EAST COAST GO TO HOUSTON TEXAS THEN TO HAWAII THEN TO GUAM.
IF YOUR IN ASIA CHINA AND KOREA HAVE DIRECT FLIGHTS TO GUAM, JAPAN IS ONE OF THE MAIN JUMP TO GUAM FROM THE ORIENT
IF YOUR IN EUROPE GO TO CHINA OR KOREA, OR TO DETROIT MICHIGAN THEN TO TOKOYO THEN DOWN TO GUAM.
THE HOTELS AND LARGER MOTELS HAVE SHUTTLE BUSES AND THERES THE LOCAL CAB COMPANY AND THERE ARE ALOT OF RENTAL PLACES LIKE AUTO, TRUCKS,SPORTY MOPEDS, AND THE LOCALS