Queues
Because I went there out of Danish holiday time, and on a rainy day, I encountered barely any queues. However, from experience at Windsor, I would say that the busiest rides would be the Jungle Racers, Lego Canoe and Dragon.

Try to get a ticket at the beginning of the day for the Driving School, in order to secure a place.

Don't miss out...
Allow plenty of time to see inside the exhibitions at the Beginning of the park. Some of them are really good.

You can see Miniland at any time, by make sure that you get around it all by the end of the day.

Allow plenty of time to play in the Eagle's Nest, and also go around all of the trails in Adventure Land.

Remember to have a look carefully around each area, as many have models dotted about that could otherwise be missed. Ensure that you don't miss the bands in the Pirate and Adventure areas.

Purchases
The guide book (2001 at least), is only useful as a souvenir, so don't expect to find useful information for the trip in it. It does have a good aerial view of the park in it though.

If you are a collector (of Lego models), make sure that you check out all of the shops, as many have discontinued models unavailable in England.

The best souvenir is a Lego man on a keyring, which are cheap and you can make a good collection out of them.

Don't bother with a photo of your ride on either the roller-coaster or canoe. Do this.

The Weather
If it rains, you can shelter on the Pirate ship in Pirate land, in the castle, at the Outpost Grill or in the buildings in Legoredo.

You can also grap a ride in the Legotop if there is a light shower.

The rides that are the worst in the rain are the Driving School and safari.

Quite a lot of the Dragon ride, Mine Train and Pirate Boats is under shelter.

It doesn't matter if it rains when you are on the Wave Surfer.

What to do in a spare few minutes.
The Caterpillar and Mini Boats are great, short rides, which can be squeezed in at any time.

Miniland is always there to see.

You might find something good to do wandering around Legoredo, there are loads of places to explore there.