The reservation link below will only work for the nights of 6/28 and 6/29. There is a minimum two night stay requirement in order to receive this rate:

https://www.marriott.com/event-reservations/reservation-link.mi?id=1697469511484&key=GRP&app=resvlink

You can also use this link if you are looking to book a shorter stay: https://www.marriott.com/en-us/hotels/bufbd-buffalo-marriott-at-lecom-harborcenter/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0