I was in Cabo San Lucas in January. If I am not mistaken, the Riu Palace is on the corridor between Los Cabos and Cabo San Lucas (but much closer to Cabo San Lucas). I did not go in but my airport transfer stopped there to let some people off, it is big, but looked REALLY nice. I stayed at Cascadas de Baja, which was amazing, and at the end of the corridor and just a couple blocks walk into the town of Cabo.
When will you be going? Just wondering because it is whale season right now and we went out in a rubber dingy and were feet from giant humpback and gray whales. It was great. And by the way, Cabo San Lucas is a PARTY town
I was there early May of last year and it was great. Really hot during the day and actually got pretty cool at night with the ocean breeze. The food is okay, just like any all inclusive and the workers are nice. They took some money from our room and my ipod, but it wasn't locked up just in a back pack that was closed. So be very careful with your things and always bring your safe key with you. It wouldn't hurt to leave a couple bucks on the pillow every day too.