The next day we started early, took a bus to the theme-park-like Argentine Iguazu. We went straight to the Diabo Throat, which awed all visitors. So were us, our jaws dropped to see all water dropping to the abyss, the fog resulted from the water fall covered the air that we couldn't see the bottom of the valley.
We were there for a long time, not taking pictures but to stand there, gazing at the fall for a long long time, feeling the power of the fall, while other tourists just stood there to take pictures for themselves.
After we paid 400 peso for the moonlight walk the same night (we were lucky to be on the second last night for a full moon trip that participants went in again after the park was closed), we walked the Macuco Trail. Expecting some wildlife, but after one hour walk we saw nothing but big spiders and coati. We went to a pool for a dip. The water was not clear but many locals go there for a dip (local only paid 10 peso to enter the theme park).
Disappointed and it was 4pm already, we went to the upper level of the falls near catarata station. Before we could cover the lower level, it went dark and it was still 6pm (when the park closed) and there were still two and a half hour before the gathering time of the moonlight walk. We went into the Sheraton hotel to hang out in the lobby. Although we cannot have wifi, we could sit in air-conditioning with sweaty clothes and see the Diabo Throat fall away behind glass.