I can't imagine that not enough chairs/umbrellas is the issue. Divi has a long, wide beach and can obviously afford more equipment. IMHO the OP is making a mountain out of mole hill. No disrespect intended.
Hmmm, I didn’t take the OP’s comments as either a molehill or a mountain but merely one more island experience that might or might not happen to anyone down the road. More of a heads up, but not a big deal at all.