The single supplement thing can get out of hand.
When researching I find that the nicer resorts tend to charge a lot more than those further down on the rating scale.
I’m not saying a supplement isn’t fair but it should be reasonable.
There appear to be better deals and/or a waiving of the supplement in the non peak times.
For example…You can go to Blau Natura Park in Punta Cana and there is no supplement at the moment.
I researched for the week of December 6th and it will cost the same if you go single or double occupancy.
Just a matter of getting the time off work.