Lan is going to visit Singapore next weekend - True
(The passage clearly states that Lan is going to visit Singapore next weekend with her parents.)

She is not going to stay at her uncle’s house near the harbour - False
(The passage says they are staying at her uncle’s house near the harbour.)

Where are they going to visit in the afternoon?
They are going to visit the harbour in the afternoon.

Where is the animal show?
The animal show is at Sentosa.