Dear A ,
My congratulations to your offer at Kearney Dubai. This is great company which has been growing up to 30% year-on-year. In the last consecutive years, before the COVID situation.
Regarding other companies. There are in the similar position. Strategy&, Oliver Wyman and others are pushing back the starting date for the candidates also to January 2021. However, Roland Berger and BCG stick to their commitments. Some of my mentees have started their job simply on remote working, bur during COVID time.
As for your second question, there several options which you can choose. Of, course, you can focus and get one of the internships in this time. You can also complete a couple of courses or learn a new language, for example Arabic, which you will definitely need, if you don't know it yet. Otherwise, you can also spend this time with your family and friends, because your personal life will come short after you start in consulting. Last but not least,it's also very valuable time to prepare yourself in consulting industry. If you wish, I can share with you deep insights from Kearney Dubai - the working culture and how t become a successful consultant and build quick career over there. I have many friends who work there as partners, principles and project managers.
Feel free to drop a line.