Girlieee
Bride-to-be!
There are good, credible vendors around but alot depends on your
budget . I notice no budget stated heheh.
Has anyone been to a outdoor solmisation? How you
feel about it, what was the wet weather contingency plan, dress
code, location, afternoon or evening?
Need to request for hotel to provide wet weather plan or marquee
for your solemnization ceremony
Anyone knows a good florist that does those floral
arrangement for weddings? like decorating the chairs with flowers,
etc.
Ask from hotel if they have recommended florist, they usually do.
Advantage - florist is familiar with venue, hotel trusts
florist.
Any other good deco ideas dinner venue more
'unique'? the table and chairs r white (cannot change color
) and i dun like white 
As above, ask the recommended florist what they can do. E.g.
colored table cloths on top of the white ones and floral
arrangements.
Anyone used wedding planners? Are they value for
money or not necessary?
IMO, not necessary. You will need a team of friends or relatives to
work with you, for pre-wedding preparation work as well as duties
on the actual day. (need help just sms :^D)
for bridal studios, any good ones to recommend? and
why?
Budget is key here. IMO you can shop around, start with bridal
magazines, then visit a studio whose gowns you like. Then go back
singaporebrides.com to check for reviews.
What to look out for - a designer than is gam with you in
personality , who has a sense of aesthetics that is gam with yours
i.e. both have same concept of "nice / pretty". Also important is
credibility - if shop has reputation of being late, last minute
work, drop immediately.
anyone knows of a good live band that will be good
for wedding dinner?
Singaporebrides.com will be good forum to check on this. I know
it's confusing but is good resource 
i was told hard liquor no corkage charge. if Jack,
Jim and Johnny was served instead of Tiger, Merlot and Chardonnay,
will it be very un-wedding like?
"It's your party and you'll drink hard liquor if you want to"

You know best what your guests will appreciate. Maybe just provide
one wine and the rest, your choice.
the most important question: how to convince parents
that having a wedding during chinese ghost festival is OK?
(i
dun wan to change date
)
Are you sure you wanna put deposit before convincing them?
Or is that the plan, pay first then tell them so they bo bian?
LOL
I have no answer to this, perhaps just convince them that the
chosen date is a significant one for both of you (I assume) . Which
side parents pantang?