You can rent some economy car for tho trip. Or, if you need a bigger car, you can rent a long S-class . Car rental company TLT, just provides such an opportunity https://tlt.ae/hotel-partnerships/ . We went on vacation in a big company of 7 people, and this option came in very handy. It is much more profitable than taking several vehicles, as well as positively affect atmoshere as you travel together.