Spanish language Q&A Forum

I am translating a feedback survey for an event. Could someone kindly check my work?

What did you like best about this event?

¿Qué es lo que más te gustó de este evento?

What is something you learned?

¿Qué es algo que aprendiste?

Please Share any feedback

Por favor, comparta cualquier comentario

Let’s hope I win this contes!

Esperemos poder ganar este concurso …’Let’s’ and ‘I’ are two different subjects…Why isn’t it subjunctive?

Could someone please tell me why I was told it's wrong here in this quiz?

Kqiziq (B1): El año pasado visité todas las ciudades de Cataluña ___________ Tarragona (Last year I visited all the cities in Catalonia except for Tarragona). 

The options given: menos/sino/pero/aunque/incluso. 

I chose «sino», and I was marked wrong. The correct answer was «menos». I, of course, accept «menos», but why is «sino» wrong here??

I love reading and listening to the travel stories, or diaries.  These 3 audios are perfect examples. 
Even though we can google all the needed information, it´ll be even greater if some culture insights or backgrounds can be included in the introduction to these lessons, especially when talking about local cuisines.  

Question about ¡Qué delicioso! 
 in the text, the mochilero had eaten all the food in feminine forms, such as arroz, trucha frita, yuca y salsa. 
Shouldn't it be 
¡Qué deliciosa! instead?

Why is "of the mountains" not translated as "del montañas"?