The success of "Romancing the Stone" wasn't in the non-stop bickering between the principals. Rather, that was a component in a film -- one of my favorites -- that had a lot of other things going for it, like atmosphere, an intersting B-story featuring rival groups of antagonists, an interesting setting and, most importantly, the tension between Joan Wilder's romantic fictions and her romantic reality.
With "Jewel of the Nile," everything is gone except for the bickering. The most enjoyable villain is reformed (mostly), the setting is generic (and fairly insulting) Middle East, and the adventure features little of the fun that informed the first movie.
Apparently, there's a script for a third movie floating around in Hollywood that's allegedly far superior to "Jewel of the Nile," and there are people who are reportedly disappointed they couldn't ever make it, due to the lack of success this film had. I'm sorry, but "Jewel of the Nile" got what it deserved: It's a middle of the road remake to a film that really lucked into its breakout status to begin with. This is by-the-book filmmaking, and comes off that way.
Whereas I am pleased to own "Romancing the Stone," "Jewel of the Nile" is definitely just a rental, at best.