My Vacation

If my sentences are wrong, can you help me correct them, please ?

For Summer vacation I will go to (summer vacation in) Nha Trang beach. There, (In here,) I will be able to (i can) eat delicious seafood such as (:) octopus, shrimp and (,) crab. (,....) I will enjoy (play:) parasailing and surfing, it's (very) wonderful, for sure. In the morning, I will watch the (i saw) sunrise, glance at the waves as I walk (and walking) along the coast. I will build (built) sand castles, sunbathe and swim on the ocean. Incredibly, (Incredible,) in the afternoon, the sunset is more beautiful than weekday !!! My summer vacation will last just about 2 days but it will be (it's) an (a) awesome time and good fun. (, I'm really funny.)
If you have the opportunity, you should come to Nha Trang beach, in VietNam. You will really enjoy it (satisfied when you are) here, that's for sure.

Thanks for your valuable feedback. (feedbacks)

Interestingly, you have written this in the future tense which makes a nice change. So, you just need to remember to include 'will' - being future tense. We are not likely to say 'very wonderful' maybe 'really wonderful' sounds better. The plural for feedback is the same as singular. Nicely written and enjoyable to read.