From the description "This set is similar to the types found at a McDonald's", that the play unit is power coated metal (hopefully aluminum). Wood structures are a very high maintenance item on playground equipment. The humidity will help keep the wood from drying out, but wood still must be sanded, sealed and painted every 6 months to 1 year (based on usage) to prevent splinters, etc. Powered coated metal requires far less maintenance, particularly aluminum. Both steel and aluminum needs touchup paint to prevent pitting and rusting, in the case of steel, due to the salt air.
I've had some experience with playground equipment since for several years I was the Park Coordinator for the County I live in. All wood units were replaced due to deterioration (Ok its Arizona with very little humidity). Splinters were the major cause of accidents and the units were extremely high maintenance items for our crews. The new powered coated metal units have been in for several years and are low maintenance and have caused no problems. All playground equipment must be checked regularly for to ensure there are no safety issues (bolts loosening, chains, ropes, swing seats, all wear over time).
Is this a new unit or a used one? Do you know who the manufacturer is? Just Curious.

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