Anything you are interested in is a good theme! Write about something you have experience with.
you can go on the best rides in theme parks
There are a number of good party food ideas for children and it depends on the individual tastes of the children. Mini pizza's, toffee apples, nachos and dips are all good party food ideas.
There are many sites that provide great ideas for teenage halloween parties. Here are a few links: party.lovetoknow.com/Halloween_Party_Ideas_for_Teenagers and www.ehow.com/how_1398_throw-halloween-party.html.
House parties can be named anything. The best ideas for a name for a house party is to have a theme and name the party after the theme.
Alton Towers, Drayton Manor and Blackpool Pleasure Beach (On the big rides, you can get a good view of the sea,its amazing.)
Good ideas for party entertainment will depend on the theme of the party. For example, if the party is for a child, perhaps a clown or magician will be a good idea. For adults, perhaps live music performance will be a good idea.
you can have like a mythical creature theme - kind of like fancy dress
Drayton Manor is good. There are not a lot of thrill rides though but the rides are good.
Food Network's website always has good ideas for themed parties, and can totally help you plan your party around this theme. mojitoslounge.com might be able to give you a bit of inspiration as well.
You can go to a party supply store and let them know your theme. They will have a lot of ideas and be able to help you plan your party.
This really depends on how literal you are taking the Hawaii theme. If you are not going literal, a simple framed photo or CD of songs make good favors. If you want a more literal approach to your theme, you might try food-type items that are from Hawaii, such as macademia nut candies or chocolates.