Hey! Post 116 is mine! I feel famous!Right.
But yeah, I think you do need to remove the top plate to get to the bolts closest to the driver.
Though I should say that if one were to get the taller drawers, it might be possible to climb inside to tighten or loosen these bolts. That’s what I saw online and was surprised to find that I and my wife did not fit inside my drawer.
But even so, I don’t think it would take me more than 20 minutes to remove the entire drawer. And then 20 minutes to re-install it. Taking the top plate off doesn’t add much time.
Though, I only have one drawer. I would guess it would add another 10 min if I had a double drawer system.