Sorry, no immediate critique on these... They're just very good 
Or maybe I'll just give it a go on some images... mind you, this is coming from an amateur and they're VERY minor comments - and only because it's probably more useful to you than yet another "great job"-comment.
The right-side frame of #6 (dude in straw hat + sunglasses) is very centered, I'd crop that so his sunglasses are at about 1/3 from the top.
If possible, I'd cool down the white balance very slightly in #7
Try to clone out / crop the tree on the very left side of #10, since it's only half in the frame as it is anyway.
Same for the edge of the pool in #11. It breaks the flow of the waterline and I think the image would appear wider if you crop like 5% off the left side.
White balance in #12 seems inconsistent with the rest of similar shots (at least for the faces - compare it to #14?),I'd warm it up a bit.
The horizon is slightly tilted in #19 and #20
Hope this helps you a bit, but again, very, very nice set!