Kansai Area Pass

Hello! I am back. Once again, I am going to Japan in two weeks to attend my friend's wedding. This time, I am going to be there for four days.

Now, my question is- is it worth it to get the 4-day Kansai Area Pass for this trip? My boyfriend and I plan to go around Osaka, Kyoto, and maybe Nara and Himeji during our short stay. Our tentative itinerary is as follows:

Nov 22 - arrive KIX late in the afternoon, go to hotel and rest; explore nightlife in Osaka
Nov 23 - go to Kyoto, maybe Himeji/Nara and do some sightseeing; transfer to Kobe for hotel
Nov 24 - attend wedding, hang out with friends; change hotels (but still in Kobe)
Nov 25 - explore Kobe for a bit, go back to Osaka and explore; go to KIX at night

We will be moving around a lot, but my main concern is that unlike the Unlimited JR Pass (which I used when I was in Japan a few months ago), the Kansai Area Pass has more restrictions and I'm afraid that I would still have to pay more for extra fees and such. So will it be more worth it to purchase a 4 day Kansai Area Pass, or just get an ICOCA card and load it up with money? Will the Kansai Area Pass cover all of our itinerary?

Thanks a bunch.