I have been into PBI a few times. No problem with traffic or airspace. The airport charges a $15 landing fee for single-engine planes, which is collected by by the FBOs.
Of the three FBOs, Atlantic is best for the piston crowd. Charges are $20 per night tiedown and a one-time "infrastructure" fee of $20 or $25. There is also a handling fee which is waived with purchase of 15 gallons fuel. As you can see on Arnav or other sources, their fuel price while no bargain is much better than Signature or Jet Aviation, which have similar if not greater fees. The staff was pleasant.
Alternatives in the area don't save you much. Signature at North County F45 charges a whopping $25 per night, $5 one-time security fee, and there is a $29 handling fee waived with fuel purchase. Self-serve is a reasonable $4.75 and hasn't changed in years. It's way out there though, and I consider their fees outrageous given the location and level of service. Lantana LNA will cost $15 or $16 per night, no other fees but fuel prices higher than Atlantic.
PBI is worth it for the convenience unless your actual destination is farther out.
Jon