In their invitation they say:
"Join us in coming together to sign a guest book and light a candle, and sharing some time and thoughts with your friends, neighbours and SL community.
To sign the guestbook, just drop a notecard in with one or two lines in it. Your words will automatically be written on the pages of the guestbook.
No donations, please.
Kip and Chaz"
The Orland Memorial - light a candle & sign the guestbook (SLurl)