Do I need to wait for any advertising campaigns in order to earn this $300?

No need to wait, as LCR is actually the advertiser on these cars for the entire 1 year lease period.

For New Hirers
The cars shall be pre-installed with these die-cut LCR stickers (as per car pic shown above).

For Existing Hirers
You will need to be driving or change car to one of the participating car model (i.e. Honda Grace Hybrid, Shuttle or Vezel Hybrids), run down your current lease which is up for renewal on or before 31 Jan 2020, and to bring your car to LCR @ Carros to install the die-cut LCR stickers. Please call 6252 5525 to enquire about your loyalty rates.