Thanks for the feedback guys. Maybe it's not past and present tense mixing. Below is another example of what I'm trying to do.
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Today, I had an awesome day at work, and now I'm just having some good ole fun with my best friend, Ashley. We're just hanging out and catching up on old times. I remember the good ole days of partying and all that good ole fun.
"Do you remember that time when we went to that concert in Montreal?" I asked Ashley.
"Yes, I do!" Ashley replied. "I remember you getting up on the stage and singing with the band!"
I laughed. "Yeah, I remember that too!"
Me and Ashley sure had a lot of fun back in the day. We still do, but yeah, those where the days!
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The story also involves adventure and time travel. Below is example of the adventure side:
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Me and Ashly made our way down the valley, and we stumbled upon something. There's a city in the distance.
"Look over there," I said to Ashley. "It's a city."
"I wonder if that's Montreal," Ashley replied.
"It might be," I responded. "Maybe we should go check it out."
I wonder if that city really is our home in this future world. It is quite possible, but it might be too dangerous to go and find out.
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Does mixing it like this work?
I think it does, though like luciusstorm pointed out, the first example is a bit confusing because it sounds as if the conversation is happening in the same timeline. But other than that, the idea of having the present tense for the narrator's observations, memories, thoughts etc. and the past tense for dialogues is working really well as long as you keep it consistent :)
