I really like days in holidays. - krótko: I really like summer holiday.
Then I can sleep for a long time and relax.
I go with friends (at the lake) to the lakeside. We swim, (lie in the sun) lepiej: sunbathe, make a barbecue and have (a)-bez tego fun. I like summer, because it is warm(th) and the days are long.
I like shopping, so when I have a lot of time I go to the shopping centre and buy (many) lots of new clothes, shoes and gadgets.
In the evenings I go (at) to the parties, drink some beer and I come back (to)-bez tego home very late.