for aussis travellers heading to usa.  first thing to remember is their scale of rating for hotels is very different to aus hotels.. a 4 star hotel their is about a 1 here.  as in we stayed at a so called 4 star resort right near disneyland.. and were supposed to have a continental breakfast.. it ended up being 1 coffee and 1 iced donut that had to be colelcted from front office.  they dont have bar fridges in most hotels and u have to get ice.  some hotels are not very helpful.  so get plenty of advice and choose wisely.  for attractions dont miss Knotts Berry Farm its a great day out adn to be honest preferred it to over commercialised Disneyland. 
women do NOT travel alone.  and dont flash your money around alot.  i was told that if i need to get money out of my wallet to go into toilets and do it.  but thats abit over the top.  Check out some of the larger malls such as i think its called South Mall  in Los Angelos.  its huge and lots of good bargins. If u have a multi day pass to Disneyland try and do all the other sightseeing first and leave Disneyland to last.. that way if you want to go back and pick up things you can.  WE had no coffee or tea even toast making facilities in room.. couldnt even keep milk in with us as nothing to store it in as no bar fridge.. so very ahrd to make simple things to eat.. eating out all the time is costly.. try not eat before or after going to theme parks as the food there is over the top in prices.. for something different try Medievil times it was a fantastic night of knights in shinging armour.. jousting and falconry.