Yes you can! Please let me know before you RSVP so that I can include them in the list
Depends. An interesting story would be required. But do let me know so that I can update the list. (I'm only half-joking here).
I would recommend a direct flight. Flying through Europe in February (winter time) is always unpredictable due to various weather delays.
You certainly could. It's a fantastic hotel. However, it's quite far away from most attractions in the city. If you plan on coming to Dubai just to attend the wedding then I would recommend this option.