Has anyone renewed their vows? Is it a norm in Singapore? Have been married for 15 years, and am thinking maybe we should!

There was an event recently where 40 couples renewed their wedding vows. http://www.channelnewsasia.com/news/singapore/couples-renew-marriage/2392664.html It's not a legal process. https://www.rom.gov.sg/reg_info/rom_other.asp There's a renewal of marriage vows service here: http://sjc.org.sg/index.php/ministries/family_life_ministry