Shibazakura from Shin-Fuji during Golden Week

I am planning to go to the park during this coming Golden Week and am wondering, given the limited buses from Shin-Fuji Stn, will there be a chance that the bus would be full by the time I arrive at the station? IOW, should I be there much earlier or just be there 10 mins before the bus departs?

Thanks in advance.

From where?
Reached impossible to Kawaguchiko side last day or on the day?
Take a Shinkansen(or JR local train) plan?

I would expect them to provide enough capacity, e.g. a second bus, in case there are too many people. Japanese bus companies are usually quite reliable in that regard. But I cannot fully guarantee.

I will be coming from Ikebukuro and there are trains arriving either 40 mins or 10 mins within the departure of the buses. So I should be ok taking the later train?

Thanks Uji.

I personally would take the earlier train. I prefer to travel on the safe side.

Will do. Thanks again, Uji.