We did the walking tour of the old city and it was fascinating. Our guide, JJ, knew his history and gave us a lively, interesting lecture at every opportunity. The streets of the old city are beautiful, lined with centuries old buildings, second story balconies had overflowing flower boxes covered in beautiful blooms. Poverty is everywhere, but people were friendly. JJ was attentive and very safety conscious. Never did we feel unsafe or feel like we would be left behind (like we did on the Panama City walking tour). This tour is worth the money, but take a bottle of water. A bottle was provided at the end of the tour but it wasn't enough for me because of the intense heat and humidity. Two thumbs up!
Shop til you drop in Aruba. Our second time there and once again we took advantage of the great shopping. Note that 90% of the stores close on Sundays in Aruba and we were there on a Sunday this time around which meant we had access to limited stores. If you're going to arrive on a Sunday, better to book an excursion. Eagle Beach is the quieter of the two main tourist beaches (Palm Beach being the other), but populated enough that you don't feel completely alone.