Hi Day Lily,
It is not true. Date selection using tong shu is not accurate and for mass consumption only. think of it...if tong shu states that this date is a good day,does it mean the whole world is good? In real life, on a tong shu bad day, there are many people earning millions on this day. and on a tong shu good day, there are many going bankrupt on this day too!
tong shu is very generic only and many of the info in the tong shu is inaccuarate. For real date selection methods, we have to use your bazi (birth data) to calculate to ensure that date is specifically good for both of you.. Bazi vs Tong Shu method is just like MTM via Off The Rack gowns
And using Bazi method, i can select dates for ANY year. I've just started to do so for 2012 dates this week.
For your case, this shows that tong shu is not accurate. Coz every publications of tong shu you buy, as well as getting it online, all tell different things! One tong shu says this date good, the other says this date bad
Hope you get my idea..which is one of the reasons why tong shu is inconsistent and not accurate.
I can't advise you who to believe coz i don't know the actual situation. But if you can't change the banquet, it will be hard for you to do anything too if the date turns out to be really bad.