Xiǎowáng nǐ bié zháojí, zánmen děng nǐ.
False: 小王你别着急,咱们等你。
Xiǎowáng nǐ bié zháojí, wǒ men děng nǐ.
True: 小王你别着急,我们等你。
“咱们”包括谈话的对方即小王,而此句不包括谈话的对方。应改“咱们”为“我们”。
咱 们 includes the hearer. But in present sentence, the group of people waiting for 小王——the hearer certainly does not include him. Thus 我们 rather than 咱们 should be used.