Should I ask a stranger to give up his table to me at a cafe?
Do you think that you deserve the table more than him?
Yes, I'm the type of person who always gets what he wants
I understand someone is sitting at the table that you want, but you can't expect a stranger to give you their table. Find somewhere else to sit instead.
He's going to get up and give me his seat.
I think it's best that you just leave him alone and find your own seat. Don't you want them to relax and have a peaceful day without someone interrupting them like that? How about asking to sit with him instead, he could be open to making new friends!