Hotel Block Calculator

Plan your hotel room block size and understand attrition risk.

Recommended Room Block
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Room Nights (total)
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Total Block Revenue
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Attrition Minimum
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Penalty Risk
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Hotel Block Planning Guide

A hotel room block guarantees rooms at a group rate. Most hotels require filling 80% of the block (attrition clause). If fewer rooms are booked, you may owe the difference. Book conservatively: it is better to add rooms than pay attrition penalties.

Negotiation Tips

  • Ask for complimentary rooms (1 per 40-50 booked)
  • Negotiate attrition down to 70-75%
  • Request late checkout for the wedding party
  • Ask for a hospitality suite or welcome bag delivery

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