The New Year's Day

The day before New Year's day, all my labmates and I went to Chengde to participate in the wedding of a labmate of ours. Although it is very cold there, and the lowest temperature can be -18 centigrade, we were all very happy to have the chance to the wedding.
I woke up in 4:45 in the morning, and take the earliest bus to go to the railway station. It took me about 8 hours to go to Chengde, but it was not boring at all, because we played cards all the way, so we have had a very wonderful time in the train.
After arrived there, we went to eat dumplings, which were so famous that there was a saying: all the people who have eat the dumplings will not forget them. The dumplings are extremely delicious that we eat so much until we can not eat one more.
The wedding was hold in the New Year's day, the bride was dramatically beautiful, and all the guests were very pleased to be invited, we all have a very wonderful day! After the wedding we immediately went back to Beijing.

The day before New Year's Day, all my lab mates and I went to Chengde to participate in the wedding of OUR lab mate . Although it is very cold there, and the lowest temperature can be -18 centigrade, we were all very happy to have the chance to GO TO/ATTEND the wedding.

I woke up in 4:45 in the morning, and TOOK the earliest bus to the railway station. It took me about 8 hours to go to Chengde, but it was not boring at all, because we played cards all the way. WE HAD a very wonderful time ON the train.

After ARRIVING or WE HAD ARRIVED there, we went to eat dumplings. THESE were so famous that there IS a saying: ANYYONE who HAS eaten the dumplings will not forget them. The dumplings WERE SO delicious that we ATE so much THAT WE COULD NOT eat EVEN one more.

The wedding was HELD ON New Year's Day. The bride was dramatically beautiful, and all the guests were very pleased to be invited. WE ALL HAD a very wonderful day! After the wedding we immediately went back to Beijing.

It is very good. 

You can make shorted sentences.  It is easy to read and you will not make grammar mistakes

You should learn the PAST tense of words.  we go/we went   we have/we had.   It is difficult for most chinese speakers because the verbs change as you know

Remember that the first letter in English sentences is capitalised.  And New Year's Day and holidays have capitals

You did a great job on this