Originally Posted by
DataPlumber
Fly it, see what happens, and worry about it then. There's a thousand permutations of how you will be re-accommodated if you miss the LHR connection. You likely *not* to be re-rerouted via DFW. If you do find yourself stuck at DFW, Grand Hyatt would be my rec and use your UK261 compensation towards the bill if it exceeds the budget.
Did you perhaps miss that OP needs the hotel
if the trip goes as planned, but may need to
cancel it in case of IROPS? Sounds like you were thinking the other way around.