OK, so I MIGHT be brave and accept my first wedding cake (something I swore I would never do, for fear of Bridezillas or 'ruining someone's special day').

The attached pic may be similiar to the final design.
My questions are:
What sizes would I need to serve 150-200 people?
How do I get the layout of the little beads on the sides so perfectly aligned?
Are the tiny side-beads hand-rolled or pre-made or dragees?

Guess I may also have to invest in my 1st First Impression Pearl Mold too!

Thank you all for your help!

I believe those are royal icing, piped on.

According to Earlene's chart it would take a 16"-12"-8" to serve 155, which includes the top tier. I agree with PinkZiab that the dots are piped on. You could use a diamond impression mat to get the spacing for the dots. It is a beautiful cake. Good luck!

A diamond impression mat would make lines on the cake - if you just want dots try the dot impression mat. I have several, each one spaced differently. Check earlenes cakes or sweet expressions (on ebay)

Good luck!

Ah, of course! Royal. I think my hesitation is causing me mental blocks!

Thank you ALL!

You are right about the lines on the diamond mat. The dot one would be much better. =0)