How long does the registration process take?

They tell you to set aside up to 3 hrs for the whole process.

My first visit was on a Wednesday at 5pm and I finally finished donating at 8:55pm almost 4hrs

Yes.. About 2-3 Hours Depending On How Busy They Are.. Hopefully Youll Vome On A Day Thats Not Too Busy..I Woul Go On Monday...Its Not Busy In The Morning..

I'd figure 3. Visits after that are at least an hour minimum. Still not bad if you go twice a week and get bonuses

The very first time it takes about 2 - 2 1/2hrs