Shanye2233 you've had some good advice about splitting the information you seek into the programme specific forums and asking there - that would be the best way to get the info and suggestions for how to get advice. Reading your post, I think there are three different areas you are seeking advice on:
- How to maximise US airways miles earning in Australia to get the amount you need
- how to get the hotel points you need
- how to ensure your daughter is flown safely
Each of those is worthy of a thread on its own really, to help you get the best information. Additionally, I don't know how much OT stuff is allowed in either the QF forum or the Australia forum - drop a note to the moderators (if you need help finding out who they are, drop me a message) to see what they will allow in the way of slightly off topic posting to maximise the knowledge that Australian based frequent flyers can provide - the US forum can be a bit US centric, and it's local knowledge you are also needing.
One thing to note - Hyatt is not a great programme for European hotels. Hilton or Priority Club (Holiday Inn) are usually more widespread - PC can be stupidly easy to earn points in, so might be worth considering that as well. Don't worry too much about status - if you can get the points, you can get the stay. Also, consider that it might be cost effective buying some tickets and using points for the others - you want the cheapest options for travel and there may be a point where actually paying for some will be cheaper than continuing to have to spend to get more points/miles.
Because your thread covers a range of areas, it isn't really suitable for a move to any one of those areas. You might also want to consider posting a review of your point earning stragety into Milesbuzz! to see if anyone can help you target your earning in the most efficient manner. In the meantime, I'll close this thread since it is off topic for Communitybuzz!
Jenbel
Co-moderator, Communitybuzz!