Girls, Do girls mind being asked out or directly for sex?

I was on holiday and met some girls.

2 examples. On a tour I met a local girl working for the company. I was chatting to her several times. She was really attractive and friendly with me. Of course she was working so not going to be rude. I wanted to ask her to dinner but chickened out. Should I just asked her? Worse she can say is she's busy etc she won't be offended?

Example 2. I met a hot girl in hostel we got on well lots of talking. I'd like to have slept with her but I don't know how to go about that. We were hanging out and chatting a lot at what point and how would I go about asking if she want sleep with me. Any times happened before I wait for girl to make some move so don't happen too much haha. And would she be annoyed rude if I ask her directly or its normal? Again worst she can say is no but be hard to speak with her again if rejected.
Girls, Do girls mind being asked out or directly for sex?
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