1)早起 is a verb that means "to get up early". 2)When you use 平常、常、常常、平時’、偶爾、通常、經常、日常、頻繁等, you should use 會 after it. Here, 會 means "am likely to". So 雖然我知道吃冰淇淋對身體靖康不好，但是我也還偶爾會喫點。Although I know that eating ice cream isn't good for you, I will still have some every now and then. More literally "I am still like to have some every now and then". 3) To have a lie in, to lie in, or simply to get up late is "睡懶覺" (sleep lazy sleep). 4) A 早起的人 is "a person that likes waking up early". So "I'm not a morning person" should be translated as 我（并）不是早起的人 - I'm (really) not somebody who likes getting up early. 5) I don't know if you have been taught how to use 每 yet. When you use 每, it is usually combined with 都. In English, this is overkill, but not in Chinese. Therefore "all of us want to go to China" is 我們每一個想去中國 in Chinese. If you combine 每 and 都 with 常常 and 會, you'll get a sentence like 我們每一個都偶爾會抽烟 - All are us will smoke occasionally.