I can share about halia (botanic). going to have my wedding there.
Halia has a range of packages. 118, 138++ so on (depending on food choices). it is western menu, 4 course meal. Additional dessert buffet add $10-$15 per pax. canape range from 4-ard$8. If you choose to have 4 course meal, you can only invite up to 140 pax. if you wish to invite more guests, you have to ask for buffet.
the venue is rather small but you have to have a min spending of 16k or 20k++ depending on how many rooms you intend to book. so its really hard to say. 20k++ for booking for all 3 rooms. no diff between lunch or dinner. so if you invite 140 guests and min spending is 20k++, works out to about $170 per pax. so u have to ask for the higher priced package + dessert buffet to fulfil the mininum spending.