At 18:31, Sovak tells Vash he would be willing to pay her weight in gold. That should be gold-pressed latinum as gold is easily replicated.
Picard's spike mark can be seen on the floor as he walks onto the bridge for the first time.
When the Enterprise is shown orbiting the planet, its navigation lights are reversed. The red light should be on the port side of the Enterprise, but it's on the starboard side. The error may have come about so that the Enterprise would orbit the opposite direction.
When first meeting the Ferengi Sovak Picard says, "You're blocking the suns," setting the canon that Risa orbits a binary star pair. In all of the Risan scenes; however, all of the shadows have crisp edges. When there are two light sources, shadows cast Venn-diagram-style patterns.
Picard's backpack is not adjusted to his body. Patrick Stewart is visibly holding up the pack by hanging onto the padded shoulder straps.
When Sovak confronts Picard for the first time (at 14:14), he calls him 'Human' not 'Hoo-Man' (at 15:51) as is normal pronunciation for a Ferengi.