Thanks for the nice report and photos.
This is off-topic but maybe it can be of help. I just did an 18-day trip in the Tuamotos in French Polynesia where I stayed at lodgings with no-AC and on a liveaboard also with no AC and no fan. There are, of course, AC lodging options in Rangiroa, but at 3X-8X the cost, but not in South Fakarava. And there is one liveaboard that does offer AC, but for reasons that are even more off-topic, I preferred to go with the one that I chose.
In any case, I am also spoiled, but when there are no other reasonable accommodation choices, what else to do. Well, when the cool sea breezes were not there, or when it rained and I couldn't open the overhead hatches on the liveaboard, a portable, rechargeable battery-powered fan that can also be powered by a rechargeable USB powerbank blowing air in my face saved the night's sleep. Both of these were bought thru Amazon.
The brand name of the fan from Amazon is Topwell, but I have seen many identical ones sold under a different brand name, all made in, needless to say, China. It comes with a heavy-duty alligator-type clamp and an approx. 10-inch gooseneck, so it is not difficult to mount somewhere nearby and direct the air in the desired direction. It is roughly about 5" x 4" x 1.5", plus the clamp and gooseneck, which can be disassembled from the fan for easier packing and transport.
The Powerbank is an EasyACC, but since I bought it in 2016, I am guessing that by now you can get one that is perhaps cheaper and more powerful.
This will of course vary from person to person, but I never had to run this fan at any but its lowest speed, so I was able to get up to 5 nights of running time from one powerbank charge. And I always had the battery within the fan as a back-up, which you can recharge using either a battery charger for that size battery (Li-18650) or by plugging the fan into any powered USB port. If travelling with a significant other, I would suggest one fan for each.
The only word of caution with this set-up is that the range of speeds available from the fan varies depending on which brand and what the power source is. When used with its battery, I could get 3 speeds. But with the powerbank, only 2.