You may be able to place a wager through DRF Bets with 0 MTP provided the race has not gone off yet.
Once the race has gone off or the betting pool has been closed, you will be not be able to bet on the race.
You should aim to leave sufficient time to place your wagers, as you will need to log in to your DRF Bets account.
DRF and DRF Bets are not responsible in any way for wagers not placed properly or in time.