I just did a round as an RO, and yes, you do get massive amounts of crates, out of which you get at the very least 2 points each if you stamp properly, going by 1 point for crate and 1 for stamped paper.
Case in point, this was either one or two 5-minute cycles:
1. Empty sandbags
2. AP SMG mags (x6)
3. Plasteel
4. SG set
5. Metal
6. M15 frags
7. Sentry
8. Shotgun shells (x5 buck x5 slug)
9. Metal
10. Pistol extended mags (x8)
11. Regular magazines set
12. Motion Detector (x2)
13. Flare packs (x20)
14. Flare packs (x20)
15. Surplus explosives (4x claymore, 2x each nade)
16. Extended magazines set
17. M56D
18. HEFA crate (x5)
19. Claymores (x8)
20. Plasteel
21. Pulse rifle ammo box (x400)
One or two 5-minute cycles, ladies and gentlemen.