We moved our game night to Tuesday to accommodate changing work schedules and as a result we are sharing Games HQ with 3 (!) other groups. I will only make 1 comment when comparing tables:
On our table, we each have a little 25 page digest sized booklet of Swords and Wizardry and the DM has 3 hardcover AD&D books. Each PLAYER at the other tables had more than our entire group, including 2-3 different players handbooks and source books. One person walked in with his hands cupped at his waist and books stacked up to his chin.
It's definitely not the size of the stack, but how you use it!