I've only stayed at the HRH Club Level, but I heard the RPH has similar offerings.
I guess it depends on what you mean by lite?
At HRH there was usually a veggie tray, cheese tray, and one other finger food item.
2 out of the 4 nights we stayed there we only ate at the lounge, but that is because we had a very large and late lunch both times.
One other time we snacked in the lounge and by 8:00 we were starving and ordered room service. The other time we were at the parks and missed it all together.
Teresa