Questions & Answers about Quiero prepararles un desayuno con fruta a mis padres.
Yes, they refer to the same people, and that is completely normal in Spanish.
This is called clitic doubling:
- les = the indirect object pronoun
- a mis padres = the full indirect object phrase
So:
- Quiero prepararles un desayuno...
- Quiero preparar un desayuno a mis padres...
In natural Spanish, especially with people, it is very common to use both:
- Quiero prepararles un desayuno a mis padres.
The pronoun les helps the sentence sound more natural and clearly marks my parents as the people receiving the breakfast.