For men: conservative colored suits with shirts and ties. Jackets are not a must but good to have just in case. Wear shoes that are easy to slip on and off if possible.
For women: skirts and blouses are appropriate. Avoid short, tight fitting, and sleeveless attire. Wear shoes that are easy to slip on and off if possible.
Jeans and business casual attire are not recommended but may be appropriate in more rural areas.