Not many of the repo passengers we spoke with enjoyed Acapulco at all, including us.
When you first get off the ship there are men in blue shirts, they want to walk you to the flea market area. Don't even bother. They wanted to charge us $14, the $12 for a shotglass which we got for $1 in Mazatlan. We left the flea market as soon as possible. The prices are way to high. Actually we didn't really buy anything at all in Acapulco. Our best bargain was at a Senor Frogs tshirt outlet, about 3-4 miles from the port area...going right from the top of the dock area. They had many, many styles of tshirts for 1/2 price. So we lucked out. We found the Hard Rock Cafe and Planet Hollywood in that same neighborhood, and then went to Carlos and Charlies for lunch. Some people we talked with went to Senor Frogs restaurant for lunch which is all the way down..keep going past hard rock, away from the port area. It is on a hill, great photo opps. Other than that..I would save your shopping money for mazatlan and cabo.
Don't pay the big bugs for a cliff diving excursion. It is very easy to do it on your own. When you come up the dock (or at appropriate time), grab a blue/white cab (volkswagons). Tell them you want to go to cliff diver show. Set the price and away you go. The 1st show is usually at 1pm. When you get to the cliffs, you can purchase reserved seating yourself for $12 per person, which is excellent. It comes with two free drinks per person/ticket.
You have the perfect view for photos. After that, there are some places for shopping, don't even bother going in, they are way, way over priced. Grab a cab and head back to the port area.
Acapulco is huge, sprawling, busy, busy city. All I can say, is we have seen and and do not need to return.