HAPPY BIRTHDAY TO YOU, HAPPY BIRTHDAY TO YOU
Don't know to the first question not being much of a sports fan. The Czech Republic are members of the EU so the rules re importing Cigs from an EU country will apply ie max 3200 cigs for personal use, if bought tax paid in the counrty of origin. You may be questioned if they are of more that one brand though, as they could suspect they were not all for your personal use. As for hand luggage I would check the website of the airline you are flying with because it can change from airline to airline. I know it is still quite restricted at the moment. I have just returned from Stansted after dropping my son there. They had to put nearly everything in their checked luggage.
Enjoy you break. Jools