No, nobody can promise you definite bleeding through your reconstructed hymen on your first night. The hymen is an elastic membrane, and at times, it may just stretch and not break in the first intercourse. In others, it may break after some time, while in yet others- not break at all. However, what it can promise is- 100% guarantee of its complete construction and a tight flap life effect on intercourse- which is precisely what you or your partner might be looking for.