Hi Alex,
To answer your qns:
1) If we don't want to follow auspicious hour on actual day, must we still use Bazi to pick an auspicious day?
Yes you need to. Auspicious date and hour are 2 different things. A good date for wedding is very important even if you don't feel like choosing the hr, but then, i will still suggest you to choose the hr coz only when the date and hour together adds up to a truly auspicious date.
2) If we dont use Bazi, simply choose a day (we like 23rd Jan 2010), do we use Tongshu to make sure it's not a bad day, that's all?
Yes you can use the Tong Shu. But it is NOT accurate. A Tong Shu is for mass consumption only. A good date reflected in the Tong Shu can still be deemed inauspicious for both of you if the date is not compatible with both your Bazi. Logically speaking...if the Tong Shu say a particular date is good for wedding, does it really mean the whole world good for wedding? It makes no sense at all. Everyone of us knows that everyday, there will be someone in good luck and someone in bad luck. This is the same for wedding. So how to determine if a person is good or bad on a particular day, that is where the Bazi part comes in. It is able to determine specifically if a particular day is good or not for both of you only, and no one else.
3) Is 23rd Jan 2010 suitable for marriage?
This date clashes to Rabbit, so if any of you or your parents are born in yr of the rabbit, then this date cannot be used. If none of you are born in yr of rabbit, this is a general Tong shu date for marriage. As to whether if it is good or bad specifically for both of you, i will not know unless the Bazi is taken into acocunt. But if you are only after a general auspicious date, then it can be used.
>She's Catholic, I'm not, and we're having >church ceremony, so it's a fusion style.
It doesn't matter. Date selection is a form of Astrology, not religion or superstition (as commonly misunderstood or preached by others). And end of the day, we are all still Chinese and we have our Chinese customs and traditions to follow. And none of these are part of any religion. It is just a Chinese culture passed down from our ancestors.
Hope this helps