No and no. Going to ZLO, take the bus from LM to Cihuatlán ($35p) and a taxi from the bus stand to the airport. Last year the taxi cost 200p, maybe a little higher now. The taxi ride in reverse costs about 500p because taxi union. But if the bus schedule works from Cihuatlán to LM, that option will be still be less than half the cost of a taxi ZLO to LM.

Won't work for early morning departures. 8:30am bus plus taxi gets you to airport about 10:30am.

Airport to Manzanillo city you are at the mercy of the taxis. But at least you will get a guaranteed price at the booth. No haggling needed. Tipping appreciated but not mandatory.