hi pple,
I got married earlier this year at Four Seasons.. Chose it because of the capacity and also high ceiling.
But just wanted you all to know that I've attended three weddings in the past 3 years at Grand Hyatt and all the food and service was outstanding. I helped out at one of the weddings and the captain was very helpful. The food may be a bit different but don't worry. All the different menus were good.
As for the GH hotel suite, i only been to one and it's quite comfy and big.. My friend even had tea ceremony there. I saw The Regent's bridal suite and it's SMALL.
One note though, due to the hotel layout and security, you may have to walk some distance from your hotel suite to the ballroom/ function rooms.. Depending on which ballroom /function room you take up. And yes, you can request to solemnise at a nearby function room (if there is one vacant) just before the banquet commences.