Daycare spot reservation question

I'm expecting baby #2 and my older son is 4 years old. He currently goes to a daycare we like in a nearby town, about a 10 minute drive from our city. He can't attend 4k at his current place though because their program is only available for residents of that town. We found a place for him at a different preschool where he can attend 4k and he starts next week.

We had a guaranteed spot reserved at the current daycare for baby but now they are saying since my eldest will be unenrolled by the time baby is born, we have to pay another registration fee. The new place also says they have a spot available for the baby, but I had wanted to hold the spot at the old place too. I'm a little nervous that we won't like the new place, and it's a lot more expensive than our current daycare.

Daycares in my area are incredibly full and have long waitlists so switching daycares quickly isn't possible. I wanted to keep my options open and was planning to make a decision after my eldest had been at the new place for a few weeks. Do you think it's worth paying the extra $100 registration fee to hold the spot at the old daycare? Or should I give it up and just hope for the best with the new place? We've had to switch daycares 3 times for a variety of reasons and I just hate dealing with it.