Nope, half day is not enough. The journey itself from Hanoi city to Halong bay takes about 2 hours.Best is if you can spend 2 days in Halong bay, than you must take the overnight Bhaya cruise. Loads of things to do, kayaking, morning taichi on deck etc.You can check out this website, they are my supplier in Vietnam.http://www.vietnamstay.com/tour/halongtour.htm#HL1-01

SunBrazen:They will give priority to affiliated students from MSHS Pri, I got 223 when the COP for affiliated was 225 in PSLE 2009, I appealed and I got received the call saying I was successful just 2 HOURS later. I know of friends(non-affiliated) who got 230 or 231 and yet didn't get accepted even if it was one of their six choices.On a side note, I'm doing well now and went to the best class in Sec 3. Contrary to popular belief, PSLE does not mean anything at all. Classmates with 240+ ended up in the worst class. Yes, priority is always given to affiliated students for all schools and the cut off point can be more than 20 points-40 points different as compared to non- affiliated students. So it is really good to get Primary sch with affiliated Sec sch.I also agree with you that PSLE score does not mean anything at all. With good score, you get to a better Sec sch but not necessary do well in Sec sch. I have seen too many cases like this.