letsrock, i know how you feel! it's like when i visited australia with my family some years back during christmas and we ended up eating instant noodles for dinner - couldnt even get mac's! very disappointed...
just gotta remember that CNY's a time for families to get together.
from CNY eve (reunion dinner!) till at least the third day, chinese singaporeans dress up and visit/receive family and friends at their homes, or maybe they'll enjoy the holiday together at a rented chalet. everybody's out and about, and the streets can be pretty empty.
but malay and indian food stalls tend to be open, so are fast food places.
for 2010, feb 14,15,16 (sun,mon,tue) are public holidays. so unless you're invited to a chinese singaporean friend's house, that period may not be an ideal time to travel to singapore. as it is with public holidays in any country, really :D