Thank you very much for your letter. I`m feeling great, everything is fine with me, so thank`s for your concern.
About ABC 18th birthday - He`s having a party at a club named Havana on 5th July. There`ll be definitely plenty of alcohol as well as great polish food.
I`m still not sure about a present, but i suggest buying him something inexpensive, that will last for long time. For example, a new set of wall posters would be a good choice. You know he likes to stick all his walls with them.
Anyway, I`m very pleased to see you again as soon as possible.
I hope we will have a lot of fun on the party.
Please remember to greet you parents from me.
Proszę bardzo. pamiętaj aby pozmieniać te XYZ, ABC i BCA na jakieś imiona. Najlepiej angielskojęzyczne.