Which one is better? The luggage cup holder with hook & loop or without?

I'd say with hook & loop. The luggage bottle holder with hook & loop is more convenient in installation and organization, but some customers are worried about the security. Therefore, we produce luggage cup holder without hook & loop to meet demands.

What's the length of this suitcase cup holder? Can it fit my 24 inch suitcase?

Luggage cup holder w or w/o hook & loop can fit suitcases which handles' width are less than 9.5 in. The luggage tablet & cup holder can fit suitcases which handles' width are less than 21 in. So the luggage bottle holder can fit most suitcases.

What size cup can this luggage water bottle holder hold?

Any container which diameter is less than 10 in such as 32 oz hydro flask, travel coffee mug or water bottle and so on.

Will the pouch fit an iPad?

Yes. If you'd like to hold your iPad, please order our tablet & cup holder. The middle pocket is with zipper and the Length is 11 in, Width is 8.8 in. ( iPad Pro: L 10.2 in, W 6.85 in; iPad Air: L 9.45 in, W 6.67 in; iPad Mini: L 7.87 in, W 5.3 in)