When arriving at Terminal D at George Bush Intercontinental Airport, cleanliness is an important factor to consider, as current traveller ratings average 5/10. While amenities like restrooms and seating areas are typically maintained, there's room for improvement in overall cleanliness throughout the terminal. It's advisable to keep this in mind, particularly during peak travel times when crowds may exacerbate any cleanliness issues. Frequent travellers recommend managing expectations and utilizing nearby facilities—such as those at the adjoining terminals—if you’re seeking a cleaner environment during your visit.
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