Translation of grundlegend

It is very important that you know the exact needs of your students. There are a lot of details involved in this learning process. One should always check all options and decide what is best.
I even put on my Poncho, a plastic rain coat, in order to protect myself from the aircon-breeze. Somehow I managed to fall asleep and woke up at around six in the morning when we approach Palenque.
At around eight in the evening we were back, took a hot shower and met our friends for a fancy dinner. They were leaving the country the next day and we would stay there another three days.