Hotel Block?

I was originally planning on having a hotel block for my guests but now I'm questioning if it's the best idea. A little background: I'm having a small wedding (50 guests max), no wedding party/ no rehearsal dinner, and most of our guests are coming from out of town. I got a couple quotes from hotels for a block and I think they're pretty standard since they have similar requirements: one is 15 rooms and the other is 10 rooms (most of the out of town guests are couples so I don't need 50 rooms anyways), have a 2 night requirement (both gave me Friday and Saturday, wedding day is the Saturday), have a slightly lower nightly cost than what I see when I look at booking single rooms, and require 50% of the rooms in the block booked or my card will be charged for the difference. I have some concerns. Since I'm not having a rehearsal dinner and the day before my wedding is a week day, I don't expect too many guests to come on the Friday, which means they may not be placed in the room block and get charged regular rates while I pick up the tab for the difference if we don't hit the 50% mark. Also, I'm not sure if having two hotel blocks at separate hotels would be confusing for guests. We don't want to have a rehearsal/welcome dinner the night before for a couple reasons, and the ability to have the rooms booked for Friday doesn't outweigh our reasons to not have the dinner. I want to be a gracious host but I'm not all that comfortable with the risk of having to pay the difference for half of the unbooked rooms. Am I over thinking this? Or are these bad quotes? Should I suck it up and take the risk to be a good host, or save my money? I was thinking my alternative would be to list nearby hotels on my website instead of doing the block, is that okay to do? Thanks 😊