From Avida Atria, you need first to board any jeepney going to the corner of Tabucan and R Mapa Street. You can board any of the following:
ROUTE 5 FESTIVE WALK TO CITY PROPER VIA B. AQUINO AVE. AND SM CITY LOOP
ROUTE 21 TAGBAK / BUNTATALA TO FESTIVE WALK VIA SM CITY / ATRIA LOOP
ROUTE 23 MOHON TO MANDURRIAO BUSINESS DISTRICT LOOP
ROUTE 24 LA PAZ TO FESTIVE WALK VIA NABITASAN LOOP
Then from the corner, you can board ROUTE 13 HIBAO-AN TO CITY PROPER VIA TABUCAN HUB LOOP going to the old Hibao-an Terminal. From there, you can board tricycle going to Vista Mall. You can also opt to walk. You can see the mall from the intersection area.