I am size 10 and I got a 10....played for 3 hours it was really really tight but comfortable....afterwards didn't have blisters or feel very uncomfortable...only a big relieve 5 min after I taking off the shoes....wore it a few times around the house and still felt the sides are too narrow..so went and got a 10.5 size and played 3 hours of tennis....no problems at all!
to prevent the lace thing from breaking apart....just make a knot and slip in and out of the shoes..don't tighten it everytime. coz if you untie adn tie a knot everytime....as you slip your feet in it will stretch the thing everytime you do it. So just slip in and out of the shoe and never untie the knot.
If you break it just drill a hole near the original place....it should still work good!