....for what it's worth, I'm in pretty good shape.....own/dive a fleet of large single steel tanks, as well as 2 sets of steel doubles...and always dive the biggest single tank I can get my hands on while on 'foreign' dive trips (trips that aren't road trips for me)...so it's not that I'm unusually fragile or anything.....but I and most of the divers I've gone to Bonaire with were lured in with the promise of unlimited shore diving....yeah, in theory it IS unlimited...but the reality is diving is limited by one's stamina....the endless gear schlepping gets tiresome, especially in the constant sun/heat.
...on my 2nd trip (having learned something from my 1st trip) I probably ended up doing 1/2 my dives for the week from either the house pier or the resort dive boats (6 dives....2 X 3.....were included in my package) The boats dives were much easier logistically, so on those days it was much easier to rack up 3 - 4 dives total...a couple of lazy morning boat dives...then 1 - 2 afternoon shore dives.....and/or maybe a night dive from the house pier......trying to do 4 -5 shore dives per day was a bit tiresome and quit being fun, felt more like a forced march.