Egypt is reliable to trust to be granting access to Suez Canal to all nations.
Step-by-step explanation:
The Suez canal does come under the maritime rights of Egypt along with few other nations of the region so the tax that is levied from the use of those waters is rightfully divided among the nations.
Egypt's complete coastline is dictated by the canal and for it to grant free access it must levy its taxes which it does and after the last war over Suez canal it had been peaceful and had kept its promises.
So we may say that unless proved it will keep doing the same as it is their benefit.