Similarly to Robinson Crusoe, the Swiss Family Robinson's ship gets hung up on rocks off the coast of a mysterious land. Again, similarly, they manage to salvage some things from the wreck, and provide for themselves off the land. Here the similarities end.
The Swiss Family Robinson plot line is way less convincing! The entire crew leaves the ship by lifeboat in the night, and is never heard from again - and no reason is given for their desertion of just this one family! Oddly enough, their "wreck" never gets really wrecked, but remains intact enough to plunder endlessly. Not to mention that since it was stocked to supply a brand new settlement, it has everything they could possibly need. Fruit trees, livestock, seeds, tools, even a forge and a little ship! Every time they turn around they stumble over another food source or other resource! And Mr. Robinson is a seemingly endless storehouse of knowledge about obscure tropical plants and animals and their uses.
If you are a realist, it is a bit much to swallow!
It is also very religious, and loaded with little morality speeches. There is nothing about illness, all injuries are minor, and nobody ever gets depressed with their lot! And all are continually very grateful for God's providence.
It is a very pretty picture of a family stranded in Eden, all working hard and cheerfully together. Just lovely, but much more sanitized than the truly convincing story of Robinson Crusoe.