帮我看看这篇英语作文有没有什么错误,顺便评一下分,

帮我看看这篇英语作文有没有什么错误,顺便评一下分,
An unforgettable trip
I had an unforgettable trip.I went to The Happy Vally with my friend in summer vacation.It only took us thirty minutes to arrive there by subway.We were surprised,because The Happy Vally was very huge and there were many interesting things in it.Such as Roller Coaster、Bumper Car、Pirate Boat.So we played many events.After that,we went to the restaurant and ate some delicious food.We stayed in The Happy Vally for six hours and we left there at 7 p.m..How great and unforgettable the trip is!