Schedules and tickets often refer to the airport as Manzini. Swaziland has 11 border posts with South Africa and one with Mozambique, and the smallest posts close at 4 or 6 pm. There is a bus service from Mbabane to Maputo in Mozambique, and buses ply the roads between Mbabane, Durban and Capetown and Jo'burg to Mlilwane. Minibus taxis also run between Jo'burg and Mbabane, but for most other destinations in Swaziland you'll have to take a minibus taxi to the border and then another from there to the nearest town, then change again. This can take time.
Most roads are good but there are rough ones out in the bush.
Away from the main population centres the main dangers are people and animals on the road. We encourage you to verify any critical information with the relevant authorities before you travel. This includes information on visa requirements, health and safety, customs, and transportation.