Czy list został napisany poprawnie?

Temat przeniesiony do archwium.
Treść zadania: A famous chocolate company have chosen you as the winner of their online competition to suggest an interesting new flavour for their chocolate. The prize is a visit for you and a friend to their chocolate factory in Switzerland. Write an email of at least 100 words and:
*thank the company for choosing your suggestion as the winer
*say how you fell about the prize
*ask about dates, travel arrangements and accommodation
*ask for confirmation that your friend will also travel and stay for free
Treść mojego listu:
Dear Mr Kowalski
Thank you for your letter informing me that I have won the competition. I am overjoyed your decision. I still can not believe , that I have won the competition. I am so cheerful.
First, could I ask about the dates of the trip? I would also like to know where we will be sleeping and what kind of transport do we travel? I do not like travelling by plane , so I would rather want to go by car f.g. I have one more question. Could you confirm whether travel accommodation is also free for my friend?
Thank you once again for choosing me as the winner. I hope to hear from you soon.

Your sincerely
XYZ
I am overjoyed at
can not - cannot
I would rather go... bez want

Przed that nie ma przecinka.
Which means of transport we use.
ok, tylko to zdanie...'I am so cheerful', nie za bardzo mi sie podoba. Moze byc...'I am so happy'...ale 'cheerful' nie za bardzo.
I would also like to know where we will be sleeping and what kind of transport do we travel? uważam że to nie jest gramatycznie poprawne;)