Yes, it's generally okay to leave a wall night light for bedrooms or a solar wall light for outdoors on all night provided that you follow the manufacturer's instructions and it's a soft, warm, and dim light. Such a wall mounted night light can help create a soothing and comfortable environment, making it easier to navigate in the dark without disrupting sleep. However, please always consider the quality smart night lights from eufy and other reputable manufacturers to ensure safety and convenience.