As a pilot, what do I need to know about these ramp markings at KIFP? Are they operationally significant?
They are helicopter parking markers, as per the AC that defines them:
I was never taught about this in my training and it was not on the fixed wing PPL exam nor is it on the FAA's quick reference guide but its a good idea to know what they are.
Although interestingly they are not where the airport diagram denotes the "Helicopter Parking"