Need help figuring out train timetable for autistic child

Hi all,

I would like to take my six year old daughter who is autistic to Richmond Beach. But, I first need to go there without her to see how often the trains pass by and how loud they are (she is sound sensitive).

Does anyone know about what time the first train passes on Saturday mornings?

I saw Amtrak leaves Edmonds station around 8am (or thereabouts). But, I thought there might be other trains that go earlier in the morning. I'm hoping to go there early tomorrow morning.

Any insight would be much appreciated!