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kccouple said:
Ban carry on luggage!!!

No, ban the travelers that think rules don't apply to them.
We will go to SXM for 3 weeks this year. Each of us takes a suitcase that easily fits into overhead and small bag that easily fits under our seat. We use laundry @ a buck/lb. in SXM and avoid the "checked bag circus" of customs and immigration when we return to US.