Second Draft - Formal Letter

Dear Sir,
            First of all, let me introduce myself. My name is Anne Watson and I am writing to you because I saw a quite interesting advertisment on the magazine of this month, in which there were a lot of different choices for holidays that you offer, but the one that caught my attention was the ballooning across Europe, since it said that it is an incredibly astounding experience because the passenger is in a hot-air balloon, flying through the breath taking landscapes of Europe and appreciating its beauty from a whole different angle. However, a few doubts come up to my mind while I was reading, so I was wondering if you could tell me some details about it.
             Firstly, it seems to me that on your advertisment did not appear the price, that is why I would be really grateful if you could tell me how much this holiday costs, if there is any discount or bargain and finally, but not less important, would you mind telling me what the price includes, if possible.
             Secondly, I would like to know more details about the accommodation, that is to say, whether it is included on the holiday's price and if it is so, could you tell me what kind of accommodation is, because I would prefer a cabin instead of a hotel, provided that the cabin is fully equipped.
             Finally, I must say that I have never done this activity before, so I am quite unsure about the dress code for this occasion. I was wondering if you could tell me which kind of clothes I should wear and also whether I need to carry some special equipment dor doing this activity or if you provide it.
             I am looking forward to hearing from you more details about my request.
             Yours faithfully,
             Anne Watson.