The cays: sealed beach comfort
The cays deliver postcard beaches, calm shallow water and the convenience of all-inclusive resorts. Everything is arranged for guests, from meals to sun loungers, and you rarely need to leave the property. The trade-off is that a resort cay is a controlled environment: it is not a town, has no independent civic life, and gives limited contact with everyday Cuba. Prices inside are tourism prices. If your priority is uninterrupted beach time with services handled for you, the cays are built precisely for that.
The mainland: real towns, real life
Remedios and Caibarian offer something the cays cannot: authentic place. Remedios has centuries of colonial architecture, a living plaza and a famous festival tradition; Caibarian has a working seafront and unvarnished local character. You eat in private paladares, stay in family-run casas particulares, and see how Cubans actually live and work. The beaches are not on your doorstep here, so day trips across the causeway are part of the plan. What you gain is texture, value and human connection.
Which to choose, or how to combine
Many travellers do not choose at all; they combine. A common pattern is a few nights in a resort on the cay for pure beach time, then several nights in Remedios for culture, food and everyday atmosphere, using the causeway to visit the beaches by day. This hybrid gives you the best of both and keeps costs sane. If you only have a short window and want to switch off, the cays alone make sense. If you want to understand Cuba, weight your nights toward the mainland.
One thing that does not differ is the property question: neither the cays nor the mainland towns offer a beach-condo market to foreign buyers. On the cays there is simply no residential property at all, and on the mainland the domestic housing market is not an open marketplace for visitors. So the cays-versus-mainland decision is entirely about the kind of stay you want, never about where you might buy. Framing it that way keeps expectations realistic and the planning simple: pick your base or bases, book a stay, and enjoy the coast.