I would like to go on an adventure like this, with a group of people with different backgrounds, cultures and lifestyles.

lifestyles 是 lifestyle 的复数形式。lifestyle 由 life（生活）和 style（方式、风格）两个词组成，字面意思是"生活方式"，指一个人或群体在日常生活中形成的习惯、行为和价值观的总和。