What "best for destination weddings" actually means
Most wedding website builders work fine for a hometown wedding — your guests live nearby, they don't need flight info, accommodation is their problem, and the venue is a 20-minute drive. Destination weddings invert all of that. Guests need flight coordination, accommodation block management, ground transportation between airports and venues, multi-day event schedules, and individualized info per guest (because attendees fly in from 15 different cities and stay at 4 different hotels).
Aisle was built for this case from the ground up. Withjoy was built for general weddings and added some travel features after the fact. Zola and The Knot are wedding ecosystems where the website is one feature among many. WeddingWire is essentially the same product as The Knot (same parent company). Squarespace and Wix can build any website but require plugins or custom code for wedding-specific features.
The practical question for a destination-wedding couple is: how much time do you want to spend customizing a general tool to match your specific logistics, versus using a tool that already understands destination weddings?