I definitely recommend going in big groups - because Lau Pa Sat is extremely huge. It is extremely easy to get lost; and there are just so many stalls to choose from! I suggest taking a walk around the entire centre because deciding what you want, or whether you even want to stay there. It really is nothing much; the food is not exactly special or unique to the place - ti is merely an average hawker centre with stalls selling ordinary or common food that can be found easily anywhere else in neighbourhood hawker centres.
It might, however, be an interesting experience to eat there because of its location. It is a prime location to see festive celebrations happening in Singapore, although it is most crowded during such times. It is also a popular tourist attraction because the hawker centre itself does have unique interior design which places it far above ordinary hawker centres.
This place is lovely in the night - with the bright lights coming from all the different hawker stalls, there is myriad of food choices that I'm always faced with. With the large place that is available for seating, this is one place I love to come to for late night suppers - I never have to worry that I won't be able to get a place due to the crowd. More often than not I am faced with so many empty seats - better for me, at least I can casually stroll and decide what I want to eat before finding a seat. I can already taste the crispiness of the Roti Prata and the sweet juiciness of the satay in my mouth.
On certain nights, there are perks for staying a little later in this place. The reason being that sometimes, live bands do come down to perform, jazzing up the rather noisy place with some local talent. Who says a hawker centre can't actually be a place to be? With the local music scene in check, with the local food in check, all you need (or all I need) is some really good company and the night is good to go.