We both flew out mid-afternoon on SQ 228. Bar Pulpo was the only airside F&B option, although at least at that time of the day, there were options landside (in T2 and in domestic terminals).

Last August we flew out on SQ 218, and landside options were not available, and only Bar Pulpo airside, it closed about 1 hr before SQ was scheduled to depart from memory. Not sure if a lot has changed in the year since